// DHTML Basisfunktionen
// (c) 2007 schukai GmbH
// www.alvine.de

// Funktions- und Environment-Variablen
if(typeof _ALVINE_BACKEND == 'undefined') var _ALVINE_BACKEND = false;
_ALVINE_BACKEND = (_ALVINE_BACKEND === true)?true:false;
var _ALVINE_DHTML = false;
var _ALVINE_DOM = false;
var _ALVINE_IE = false;
var _ALVINE_IE6 = false;
var _ALVINE_IE7 = false;
var _ALVINE_IE8 = false;
var _ALVINE_NS = false;
var _ALVINE_OP = false;
var _ALVINE_MAC = false;
var _ALVINE_NETSCAPE = false;
var _ALVINE_FIREFOX = false;
var _ALVINE_FIREFOX2 = false;
var _ALVINE_FIREFOX3 = false;
var _ALVINE_FIREFOX4 = false;
var _ALVINE_SAFARI = false;  //new
var _ALVINE_SAFARI1 = false;  //new
var _ALVINE_SAFARI2 = false;  //new
var _ALVINE_SAFARI3 = false;  //new
var _ALVINE_SAFARI4 = false;  //new

// Initialisieren der Environmet-Variablen
function initLib() {

	// Testen ob Javascript eingebunden
	setCookie("AlvineJavascript", true, 0, '/');

	if(navigator.appName=="Netscape") {
		_ALVINE_NETSCAPE = true;
	}

  if (/AppleWebKit\/(\S+)\s[\s|\S]+/.test(navigator.userAgent)) {
    _ALVINE_SAFARI = true;

    var safariBuild;
    var webKitBuild = RegExp.$1;
    var fullVersion;

    if(navigator.userAgent.indexOf('Version')<0){

      if (/Safari\/(\S+)/.test(navigator.userAgent)) {
        safariBuild = RegExp.$1;
        fullVersion = parseInt(safariBuild);
      }

      if(safariBuild<=419){
        version = 1;
        _ALVINE_SAFARI1 = true;
      } else {
        version = 2;
        _ALVINE_SAFARI2 = true;
      }

    } else {

      if (/Version\/(\S+)\sSafari\/(\S+)/.test(navigator.userAgent)) {

        fullVersion = RegExp.$1;
        var version = parseInt(fullVersion); // capture x.x portion and store as a number
        safariBuild = RegExp.$2;

        if(version==4) _ALVINE_SAFARI4 = true;
        else if (version==3) _ALVINE_SAFARI3 = true;

      }
    }
  }

	if (/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
		var version=new Number(RegExp.$1); // capture x.x portion and store as a number
		_ALVINE_FIREFOX = true;
		

		if(version==4) _ALVINE_FIREFOX4 = true;
		else if (version==3) _ALVINE_FIREFOX3 = true;
    else if (version==2) _ALVINE_FIREFOX2 = true;
		
	}

	if(navigator.appName=="Netscape") {
		_ALVINE_NETSCAPE = true;
	}

	if(document.getElementById) {
		_ALVINE_DHTML = true;
		_ALVINE_DOM = true;
	}
	
	if(window.opera) {
		_ALVINE_OP = true;
	}

	if(document.all && !_ALVINE_OP) {
		 
		 var $versionpattern = /MSIE\s(.*?)\;/i;
		 var version = navigator.appVersion.match($versionpattern);
		 version = version[1];
					
		 if(version.substring(0, 1)=='6') _ALVINE_IE6 = true;
		 if(version.substring(0, 1)=='7') _ALVINE_IE7 = true;
     if(version.substring(0, 1)=='8') _ALVINE_IE8 = true;
		 
		_ALVINE_DHTML = true;
		_ALVINE_IE = true;
		
	};
 
	if(document.layers && !_ALVINE_OP) {
		_ALVINE_DHTML = true;
		_ALVINE_NS = true; 
	};
	
	if(navigator.userAgent.indexOf("Mac") != -1) {
		_ALVINE_MAC = true;
	};

};

function getElementID(id) {
	return getElement('id', id);
};

// System- und browserunabhägige Funktion um ein
// Element (Objekt) zu holen
// @param type Auswahl aus: id, name, tagname
// @param ptr ID oder Name des Elements
// @param index Nur bei Verwendung des Typ tagname
function getElement(type, ptr, index) {

	if(_ALVINE_DOM) { 
		if(type.toLowerCase()=="id") { 
			if(typeof document.getElementById(ptr) == "object") {
				return document.getElementById(ptr);
			};
			return void(0);

		} else if(type.toLowerCase()=="name") {
			if(typeof document.getElementsByName(ptr) == "object") {
				return document.getElementsByName(ptr)[index];
			};
			return void(0);

		} else if(type.toLowerCase()=="tagname") {
			if(typeof document.getElementsByTagName(ptr) == "object" || (_ALVINE_OP && typeof document.getElementsByTagName(ptr) == "function")) {
				return document.getElementsByTagName(ptr)[index];
			};
			return void(0);
		} else {
			return void(0);
		};

	} else if(_ALVINE_IE) {

		if(type.toLowerCase()=="id") {
			if (typeof document.all[ptr] == "object") {
				return document.all[ptr];
			};
			return void(0);

		} else if(type.toLowerCase()=="tagname") {
			if(typeof document.all.tags(ptr) == "object") {
				return document.all.tags(ptr)[index];
			};
			return void(0);

		} else if(type.toLowerCase()=="name") {
			if(typeof document[ptr] == "object") {
				return document[ptr];
			};
			return void(0);
		} else {
			return void(0);
		};

	} else if(_ALVINE_NS) {   

		if(type.toLowerCase()=="id" || type.toLowerCase()=="name") {
			if (typeof document[ptr] == "object") {
				return document[ptr];
			};
			return void(0);

		} else if(type.toLowerCase()=="index") {
			if (typeof document.layers[ptr] == "object") {
				return document.layers[ptr];
			};
			return void(0);
		} else {
			return void(0);
		};
	};
	return void(0);
}

// Browserunabhängig Inhalte in die Seite einfügen
// @param obj Zeiger auf Objekt
// @param content Zu schreibender inhalt 
function writeHTML(obj, content) {

	 if(!obj) return void(0);  
	 if(_ALVINE_OP) {
		 obj.innerHTML = content;
	 } else if(_ALVINE_DOM) {   // IE7
		 if(typeof(obj.innerHTML)!="undefined") { 
			 obj.innerHTML = content;
		 } else {
		 // nicht implementiert
		 };
	 } else if(_ALVINE_IE) {
		 //obj.innerHTML = content;
	 } else if(_ALVINE_NS) { 
		 obj.document.open();
		 obj.document.write(content);
		 obj.document.close();
	 };
	 
	 return void(0);
};

function changeSource(obj, source) {
	if(!obj) return;
	if(!source) return;
	obj.src=source;
}

// Browserunabhängig Inhalte in die Seite einfügen
// @param obj Zeiger auf Objekt
// @param content Zu schreibender inhalt (nur Text)
function writeContent(obj, content) {

	 if(!obj) return void(0);  
	 if(_ALVINE_OP) {

		 // nicht implementiert
	 
	 } else if(_ALVINE_DOM) {  
		 if(obj.firstChild) { 
			 obj.firstChild.nodeValue = content;
		 };

	 } else if(_ALVINE_IE) {
		 obj.innerText = content;

	 } else if(_ALVINE_NS) { 
		 obj.document.open();
		 obj.document.write(content);
		 obj.document.close();
	 };
	 return void(0);
};

// Diese Funktion verschiebt ein Objekt 
// an die angegebenen koordinaten
function moveElementTo(obj, x, y) {

	if(_ALVINE_DOM || _ALVINE_OP) { 
		obj.style.left = x+'px';
		obj.style.top = y+'px'; 
	} else if(_ALVINE_NS) { 
		obj.moveTo(x, y);
	};

 };
 
function setVisibilityMode(obj, flag) {

	 if(!obj) return void(0);

	 if(_ALVINE_DOM || _ALVINE_OP) { 
		 if(flag) { 
			 obj.style.visibility = "visible";
			 obj.style.display = "block";
		 } else {
			 obj.style.visibility = "hidden";
			 obj.style.display = "none";
		 };

	 } else if(_ALVINE_IE) {
		 if(flag) { 
			 obj.style.visibility = "visible";
			 obj.style.display = "block";
		 } else {
			 obj.style.visibility = "hidden";
			 obj.style.display = "none";
		 };
	 
	 } else if(_ALVINE_NS) { 
		 if(flag) { 
			 obj.visibility="show";
			 obj.display="block";
		 } else {
			 obj.visibility="hide";
			 obj.display="none";
		 };
	 };
	 return void(0);
};

// Sichtbarkeit von Elementen ändern.
// @param obj Zeiger auf Element
// @param flag true: sichtbar, false: unsichtbar
function setVisibility(obj, flag) {

	 if(!obj) return void(0);

	 if(_ALVINE_DOM || _ALVINE_OP) { 
		 if(flag) { 
			 obj.style.visibility = "visible";
			 obj.style.display = "block";
		 } else {
			 obj.style.visibility = "hidden";
			 obj.style.display = "none";
		 };

	 } else if(_ALVINE_IE) {
		 if(flag) { 
			 obj.style.visibility = "visible";
			 obj.style.display = "block";
		 } else {
			 obj.style.visibility = "hidden";
			 obj.style.display = "none";
		 };
	 
	 } else if(_ALVINE_NS) { 
		 if(flag) { 
			 obj.visibility="show";
			 obj.style.display = "block";
		 } else {
			 obj.visibility="hide";
			 obj.style.display = "none";
		 };
	 };
	 return void(0);
};

// Position eines Elements ermitteln
// Diese Funktion arbeitet mit dem Offset eines Elements
// und arbeitet sich rekursiv durch das DOM
// Ist eine AbbruchsID angegeben und trift
// die Funktion auf dieses Element so wird der
// Wert zurückgegeben
// @param obj Zeiger auf Element
// @param id AbbruchsID
function getLeftOfElement(obj, id) {

	if(_ALVINE_NS) return obj.pageX;

	if(!id) id = "noid"; 
	var left = obj.offsetLeft;
	if(obj.id==id) return left;

	if(obj.offsetParent!=null && obj.offsetParent.tagName!="HTML") {
		left += getLeftOfElement(obj.offsetParent);
	};
	return left;
}

function toggleFoldTableRow(id) {
	
	var tbl, row;
	row = getElementID(id);
	if(!row) return;

	if(row) {

		if(row.style.display=='none' || !row.style.display) {
			
			foldTableRow(row, true);
			
		} else {

			foldTableRow(row, false);
			
		}
	}
	
	return true;
}

function foldTableRow(obj, forcedStatus) {
	obj = element_isObject(obj);  

	if(!obj) return;
	
	if(forcedStatus) {
		// conditional compilation to hide the try-catch blocks from IE4
		/*@cc_on @if(!@_jscript || (@_jscript_version >= 5)) @*/
			try {
				obj.style.display = 'table-row';
			} catch(e) {
				obj.style.display = 'block';
			}
		/*@elif(@_jscript_version < 5)
			row.style.display = 'block'; // for IE4
		@end @*/
	} else {
		obj.style.display = 'none';
	}
	
	return true;
}


// Identische Funktion für die Y-Koordinate
// @param obj Zeiger auf Element
// @param id AbbruchsID
function getTopOfElement(obj, id) {

	if(_ALVINE_NS) return obj.pageY;
	if(!id) id = "noid"; // dummywert!
	var top = obj.offsetTop; 

	if(obj.id==id) return top;
	if(obj.offsetParent!=null && obj.offsetParent.tagName!="HTML") {
		top += getTopOfElement(obj.offsetParent);
	};
	
	// to: add padding
	
	return top;
}

// Höhe eines Objektes zurückgeben
function getHeightOfElement(obj) {
	if(_ALVINE_NS) return obj.height;
	return obj.offsetHeight;
};

// Breite eines Objektes zurückgeben
function getWidthOfElement(obj) {
	if(_ALVINE_NS) return obj.width;
	return obj.offsetWidth;
};

// Cookie aufbauen
function setCookie(name, value, expires, path, domain, secure) {
	var today = new Date();
	today.setTime(today.getTime());
	if(expires) {
		expires = expires*86400000;
	};
	var expireDate = new Date(today.getTime()+(expires));
	document.cookie = name+"="+escape(value)+
	((expires)?";expires="+expireDate.toGMTString():"")+ 
	((path)?";path="+path:"")+ 
	((domain)?";domain="+domain:"")+
	((secure)?";secure":"");
} 

// Größen

function alvine_getClientWidth() {
	return alvine_getRectStruct (window.innerWidth ? window.innerWidth : 0,
		document.documentElement ? document.documentElement.clientWidth : 0,
		document.body ? document.body.clientWidth : 0
	);
}

function alvine_getClientHeight() {
	return alvine_getRectStruct (window.innerHeight ? window.innerHeight : 0,
		document.documentElement ? document.documentElement.clientHeight : 0,
		document.body ? document.body.clientHeight : 0
	);
}

function alvine_getScrollLeft() {
	return alvine_getRectStruct (window.pageXOffset ? window.pageXOffset : 0,
		document.documentElement ? document.documentElement.scrollLeft : 0,
		document.body ? document.body.scrollLeft : 0
	);
}

function alvine_getScrollTop() {
	return alvine_getRectStruct (window.pageYOffset ? window.pageYOffset : 0,
		document.documentElement ? document.documentElement.scrollTop : 0,
		document.body ? document.body.scrollTop : 0
	);
}

function alvine_getRectStruct(n_win, n_docel, n_body) {
	var n_result = 0;
	if(n_win) n_result = n_win;
	if(n_docel && (!n_result || (n_result > n_docel))) n_result = n_docel;
	return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
};


// Simple AJAX - Object 

function alvineSimpleAjaxRequest(url, id, errorID, appendInputFlag) {
	var url = url;
	var containerID = (typeof id != 'object')?id:id.id;
	var errorContainerID = (typeof errorID != 'object')?errorID:errorID.id;
	var requestObj = false;
	
	var urlData = new Array();
	var callBacks = new Array();
	var finalCallBacks = new Array();

	var urlControlData = new Array();
	var urlControlID = new Array();

	var appendInput = (appendInputFlag===true)?true:false;

		this.addToUrl = function(urlPart) {
			url+= ','+urlPart;
		}
	function checkState() {
		// 0 (nicht initialisiert)
		// 1 (lade)
		// 2 (geladen)
		// 3 (interaktiv)
		// 4 (vollständig) 
		if(requestObj.readyState!=4) return false; 

		if(requestObj.status==200) {
			return requestObj.responseText;
		} else {
		
			errorMsg = 'Error: '+requestObj.status; // @TODO: sprachversionen

			if(errorContainerID!=null) {
				obj = getElement('id', errorContainerID);
				writeHTML(obj,errorMsg);
				return false;
			};

			return errorMsg;
		}
	}  
	
	this.sendRequest = function() {
			 
		requestObj = null;
		if(window.XMLHttpRequest) { // Mozilla, Firefox, Safari, ...
			requestObj = new XMLHttpRequest();
			if (requestObj.overrideMimeType) {
				requestObj.overrideMimeType('text/html'); // BugFix für fehlerhaften Response
			};
		} else if(window.ActiveXObject) { // IE
			try {
				requestObj = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				try {
					requestObj = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {
				};
			}
		};

		if(!requestObj) {
		
			errorMsg = 'no ajax'; // @TODO: sprachversionen

			if(errorContainerID!=null) {
				obj = getElement('id', errorContainerID);
				writeHTML(obj,errorMsg);
				return false;
			};

			return false;
		}

		var parameters = "";
		for(i=0; i<urlData.length;i++) {
			if(parameters.length>0) parameters += '&';
			value = eval(urlData[i]);
			parameters += 'sxx_ajax['+urlData[i]+']='+value;
		};

		for(i=0; i<urlControlID.length;i++) {
			if(parameters.length>0) parameters += '&';
			value = eval(urlControlData[i]);
			parameters += 'sxx_ajax['+urlControlID[i]+']='+value;
		};

		if(parameters.length>0) parameters += '&';
		parameters += 'r='+(1 + 10000*(Math.random()));
		
		try {
			requestObj.onreadystatechange = eventHandler; 
			requestObj.open('POST', url, true);
			requestObj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');   // wenn data
			requestObj.send(parameters); // WENN DATA hier übergeben  
		} catch (e) {
			alert(e);
		};
	}

	this.bindControl = function(key, id) {
		handler = 'o=getElementID(\''+id+'\'); if(o) o.value;';
		urlControlData[urlControlData.length] = handler;
		urlControlID[urlControlID.length] = key;
	}
	
	this.bindVariable = function(key) {
		urlData.push(key);
	}

	this.bindCallback = function(callBack, forceExecution) {
		var newEntry = new Object();
		newEntry.forcedExecution = (forceExecution===true)?true:false;
		newEntry.cbfunction = callBack;
		finalCallBacks.push(newEntry);
	};
	
	function eventHandler() {
		var result = checkState();

		if(result!=false){
			var obj = getElement('id', containerID);
			resultContent = result;

			outScript = "";

				var collectorObj = document.createElement('DIV');
				writeHTML(collectorObj, resultContent);
			
				var scriptSegments = collectorObj.getElementsByTagName('SCRIPT');

			if(scriptSegments){
			for(var i in scriptSegments){
					if(typeof scriptSegments[i] != 'object') continue;

					var newContent = scriptSegments[i].innerHTML;
					newContent    += (newContent.substring(-1)!=';')?';':'';
					outScript     += newContent;

					if(typeof scriptSegments[i].parentNode == 'undefined') continue;
					if(typeof scriptSegments[i].parentNode.removeChild != 'function') continue;
					scriptSegments[i].parentNode.removeChild(scriptSegments[i]);
		}        
		resultContent = collectorObj.innerHTML;
		}
			
			scriptStartIndex = resultContent.indexOf('<array>');
			if(scriptStartIndex>=0) {
				scriptEndIndex = resultContent.indexOf('</array>');
				skript = resultContent.substr(scriptStartIndex+7, scriptEndIndex-scriptStartIndex-7);
				data=eval(skript);
				for(j=0;j<callBacks.length;j++) {
					callBacks[j]('array',data);
				};
				resultContent = resultContent.substr(0,scriptStartIndex)+resultContent.substr(scriptEndIndex+7+1,resultContent.length);
			};    

			scriptStartIndex = resultContent.indexOf('<object>');
			if(scriptStartIndex>=0) {
				scriptEndIndex = resultContent.indexOf('</object>');
				skript = resultContent.substr(scriptStartIndex+8, scriptEndIndex-scriptStartIndex-8);
				data=eval(skript);
				for(j=0;j<callBacks.length;j++) {
					callBacks[j]('object',data);
				};
				resultContent = resultContent.substr(0,scriptStartIndex)+resultContent.substr(scriptEndIndex+8+1,resultContent.length);
			}; 

			if(appendInput) {
				obj.innerHTML+= resultContent;
			} else {
				writeHTML(obj, resultContent);
			}

			if(outScript) eval(outScript);

			if(finalCallBacks.length>0){ //execute callback functions
				for(j=0;j<finalCallBacks.length;j++) {
					eval(finalCallBacks[j].cbfunction);
				}
			}

			return;
		}

		if(finalCallBacks.length>0){
			for(j=0;j<finalCallBacks.length;j++) {  //execute only forced functions
				if(!finalCallBacks[j].forcedExecution) continue;
				eval(finalCallBacks[j].cbfunction);
			}
		}

		return;
	};
	
};

function getViewportHeight() {

	vpHeight = null;
	if(document.documentElement.clientHeight) {  // FIREFOX
		vpHeight = document.documentElement.clientHeight
	} else if(window.innerHeight) { // Netscape & Co
		vpHeight = window.innerHeight;
	} else if(document.clientHeight) {
		vpHeight = document.clientHeight;
	} else if(document.body && document.body.clientHeight) { // IE
		vpHeight = document.body.clientHeight;
	} else if(document.documentElement.clientHeight) {  // IE6 im standardMode
		vpHeight = document.documentElement.clientHeigt; 
	} else { // Unbekannt
	}  
	return vpHeight;
}

function getViewportWidth() {

	vpWidth = null;
	if(document.documentElement.clientWidth) {  // FIREFOX
		vpWidth = document.documentElement.clientWidth
	} else if(window.innerWidth) { // Netscape & Co
		vpWidth = window.innerWidth;
	} else if(document.clientWidth) {
		vpWidth = document.clientWidth;
	} else if(document.body && document.body.clientWidth) { // IE
		vpWidth = document.body.clientWidth;
	} else if(document.documentElement.clientWidth) {  // IE6 im standardMode
		vpWidth = document.documentElement.clientWidth; 
	} else { // Unbekannt
	}  
	
	return vpWidth;
}

/*IE6 ActiveX Controls Visibility*/
function ie6ToggleActiveXControls(state){

	if(!_ALVINE_IE6) return true;

	state = (state===false)?false:true;

	var fieldList = document.getElementsByTagName('SELECT');

	for(var i in fieldList){
		if(typeof fieldList[i] != 'object') continue;
		if(fieldList[i].tagName != 'SELECT') continue;
		if(state){
			var newDisplay = (typeof fieldList[i].alvine_displayInitValue == 'undefined')?fieldList[i].alvine_displayInitValue:'block';
			element_setDisplay(fieldList[i], newDisplay);
		} else {      
			fieldList[i].alvine_displayInitValue = fieldList[i].style.display;
			element_setDisplay(fieldList[i], 'none');

		}
	}

	return true;
}

// Umgebungsvariablen initialisieren
initLib();

// Testwerte
//alert('FLAGS \nIE ' + _ALVINE_IE + " \nDOM " + _ALVINE_DOM + " \nNS "+ _ALVINE_NS + " \nOP " +_ALVINE_OP + " \nMAC " + _ALVINE_MAC);