// JavaScript Document


window.onload = function() {
	$(document).ready(function($){

		var a = document.cookie;
		var css_2012 = false;
		var bannerdir = 'banner1004';
		while(a != '')
		{
			var cookiename = a.substring(0,a.search('='));
			var cookiewert = a.substring(a.search('=')+1,a.search(';'));
	
			if(cookiewert == '') {
				cookiewert = a.substring(a.search('=')+1,a.length);
			}

			if('uniol_layout2012' == cookiename || ' uniol_layout2012' == cookiename){
				css_2012 = cookiewert; // ja|nein
			}
		
			i = a.search(';')+1;
			if(i == 0){
				i = a.length
			}
			a = a.substring(i,a.length);
		}

		
		var i = 1;

		var hoehe = 252;
		var hoe = bilder[0].match(/h(\d+)$/);
		if (hoe) {
			hoehe = hoe[1]+71;
		}

		if (css_2012 == 'ja') {

			if($("#horizMenue")!= null) {
				var header_position = $("#horizMenue").offset();
				var header_hoehe = header_position.top;
			}
			
			bannerdir = 'banner1004';
			$("#header").prepend('<div id="bg1" style="width:' + $("#page_margins").width() + 'px;height:'+header_hoehe+'px;position:absolute;top:5px;left:0;z-index:2;padding:0;background-color:#fff;display:none;"></div>');
			$("#header").prepend('<div id="bg2" style="width:' + $("#page_margins").width() + 'px;height:'+header_hoehe+'px;position:absolute;top:5px;left:0;z-index:1;padding:0;background-color:#fff;display:none;"></div>');
			$("#header").prepend('<div id="bogen"></div>'); 
		} else {
			$("#page_margins").prepend('<div id="bg1" style="width:100%;height:'+hoehe+'px;position:absolute;top:0;left:0;padding:0;display:none;"></div>');
			$("#page_margins").prepend('<div id="bg2" style="width:100%;height:'+hoehe+'px;position:absolute;top:0;left:0;padding:0;display:none;"></div>');
		}

		var extrabild = true;

		var runIt = function() {
			if (extrabild) {

				$(document.getElementById("bg1")).css({
					background:'url(http://www.uni-oldenburg.de/img/'+bannerdir+'/'+bilder[i]+'.jpg) 0 71px no-repeat #fff'
				// , backgroundSize:'cover'
				});
				
				$(document.getElementById("bg1")).fadeIn(1000,function(){
					$(document.getElementById("bg2")).show();
				});
				i++;
				if (i >= bilder.length) i=0;
				extrabild = !extrabild;
				
			} else {
				
				$(document.getElementById("bg2")).css({
					background:'url(http://www.uni-oldenburg.de/img/'+bannerdir+'/'+bilder[i]+'.jpg) 0 71px no-repeat #fff'
				// , backgroundSize:'cover'
				});
				
				i++;
				if (i >= bilder.length) i=0;
				$(document.getElementById("bg1")).fadeOut(1000);
				extrabild = !extrabild;
			}
		}
		window.setInterval(runIt,5000);
	
	});
}