/* Datumsfunktionen ____________________________________*/

	var sNoNumberError;
	
	function dateAdd (dtDate, lDay) {
	
		var aDate = new Array();
		var aMonths = new Array();
		
		aDate = dtDate.split('.');
		
		if (aDate[0].indexOf('0') == 0) {
			aDate[0] = aDate[0].substring(1, aDate[0].length);
		}
		
		if (aDate[1].indexOf('0') == 0) {
			aDate[1] = aDate[1].substring(1, aDate[1].length);
		}

		aMonths[1] = 31;
		
		if ((parseInt(aDate[2]) - 2004) % 4 == 0) {
			aMonths[2] = 29;
		} else { 
			aMonths[2] = 28;
		}
		
		aMonths[3] = 31;
		aMonths[4] = 30;
		aMonths[5] = 31;
		aMonths[6] = 30;
		aMonths[7] = 31;
		aMonths[8] = 31;
		aMonths[9] = 30;
		aMonths[10] = 31;
		aMonths[11] = 30;
		aMonths[12] = 31;
		
		aDate[0] = parseInt(aDate[0]) + parseInt(lDay);
		
		while (parseInt(aDate[0]) > parseInt(aMonths[parseInt(aDate[1])])) {
		
			aDate[0] = parseInt(aDate[0]) - parseInt(aMonths[parseInt(aDate[1])]);
			
			aDate[1] = parseInt(aDate[1]) + 1;
			
			if (parseInt(aDate[1]) > 12) {
				aDate[1] = 1;
				aDate[2] = parseInt(aDate[2]) + 1;
			}
		
		}
		
		return aDate[0] + '.' + aDate[1] + '.' + aDate[2]
	
	}
	
	
	function insertAbreiseDatum () {
	
		var dtDate;
		var aDate = new Array();
		
		dtDate = document.getElementById('bp_from_day').options[document.getElementById('bp_from_day').selectedIndex].value;
		dtDate = dtDate + '.' + document.getElementById('bp_from_month').options[document.getElementById('bp_from_month').selectedIndex].value;
		dtDate = dtDate + '.' + document.getElementById('bp_from_year').options[document.getElementById('bp_from_year').selectedIndex].value;
		
		
		if (isNaN(parseInt(document.getElementById('tage').value))) {
		
			alert(sNoNumberError);
			return false;
		
		} else {
		
			dtDate = dateAdd(dtDate, document.getElementById('tage').value);
			
			var aDate = new Array();
			var aMonths = new Array();
			
			aDate = dtDate.split('.');
			
			if (aDate[0].length == 1) {
				aDate[0] = '0' + aDate[0];
			}
			
			if (aDate[1].length == 1) {
				aDate[1] = '0' + aDate[1];
			}
			
			document.getElementById('to_day').value = aDate[0];
			document.getElementById('to_month').value = aDate[1];
			document.getElementById('to_year').value = aDate[2];
			
			return true;
		
		}
	
	}
	

/* PopUp ______________________________________________*/

	function openWin (windowURL, windowName, windowFeatures) {
	
		newWindow = window.open(windowURL, windowName, windowFeatures); 
		newWindow.focus();
	
	}


/* Image Wechsel _______________________________________*/

	function wechseln (sThis, sImage) {

		if (document.images) {
			document.getElementById(sThis).src = sImage;
		}
	
	}


/* Menu auf/zu Funktionen ______________________________*/

	var aktiv, letztes = null, letztesaufzu = null;

	function zu (welches) {
	
		document.getElementById(welches).style.display = 'none';
		return false;
	
	}

	function auf (welches) {

		document.getElementById(welches).style.display = 'block';
		return false;
	
	}
	
	function aufzu (welches) {

		if (document.getElementById(welches).style.display == 'block') {
			document.getElementById(welches).style.display = 'none';
		} else {
			document.getElementById(welches).style.display = 'none';
			document.getElementById(welches).style.display = 'block';
		}
		
		void(0);
	}

	function aufzuauto (welches) {
	
		if (letztesaufzu != null && letztesaufzu != welches) {
			document.getElementById(letztesaufzu).style.display = 'none';
			letztesaufzu = null;
		}

		if (document.getElementById(welches).style.display == 'block') {
			document.getElementById(welches).style.display = 'none';
		} else {
			document.getElementById(welches).style.display = 'none';
			document.getElementById(welches).style.display = 'block';
			letztesaufzu = welches;
		}
		
		void(0);
	}
	
	function nurzu () {

		if (letztes != null) {
			document.getElementById(letztes).style.display = 'none';
			clearTimeout(aktiv);
			letztes = null;
		}
		return false;
	}

	function nurauf (aktuelles) {

		if (letztes != null) {
			clearTimeout(aktiv);
			document.getElementById(letztes).style.display = 'none';
		}
		
		document.getElementById(aktuelles).style.display = 'block';
		letztes = aktuelles;
		return false;
	}
	
	function nurzutimer () {
		aktiv = setTimeout('verzoegern()', 1000);
	}

	function verzoegern () {

		if (letztes != null) {
			document.getElementById(letztes).style.display = 'none';
			letztes = null;
		}
		
		return false;
	}

	function stop () {
		clearTimeout(aktiv);
	}
	

/* Zu Favoriten Hinzufügen ________________________________*/
	
	function InsertBookmark (sUrl, sTitle) {

		if (window.sidebar) { 							// Mozilla Firefox Bookmark
			window.sidebar.addPanel(sTitle, sUrl,"");
		} else if( window.external ) { 					// IE Favorite
			window.external.AddFavorite( sUrl, sTitle); 
		}
	
	}
	
	function CreateBookmarkLink (sUrl, sTitle, sLink, sClass) {

		if (sClass == null) {
			sClass = '';
		}
		
		if (sClass != '') {
			sClass = ' class="' + sClass + '"';
		}
		
		document.write('<a' + sClass + ' href="javascript:InsertBookmark(\'' + sUrl + '\',\'' + sTitle + '\');">' + sLink + '</a>');
	
	}
	
	
/* Suche Paging ________________________________*/

	function ChangePage (sFormName, nPage) {
		sFormName.lPageNumber.value = nPage;
		sFormName.submit();
	}