var imgFolder = "bilder/navi";
var plimgs = new Array();

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

//Diese Funktion ermöglicht es, Rollover Bilder auszutauschen
function registerLinkEvents() {
	var count=1;
	var bild;

	while (bild = document.getElementById("imglnk" + count))	{
		//preloader
		plimgs[count] = newImage(imgFolder + "/" + bild.name + "_down.gif");

		//Events auf bild setzten
		bild.onmouseover = function () {
			this.src = imgFolder + "/" + this.name + "_down.gif";
		}

		bild.onmouseout = function (){
			this.src = imgFolder + "/" + this.name + ".gif"
		}
		count++;
	}
}

//dropdownListe für IE aktivieren
ieDropdown = function(nav) {
	if (document.all && document.getElementById(nav).currentStyle) {  
		var navroot = document.getElementById(nav);
		
		var lis=navroot.getElementsByTagName("DIV");  
		for (i=0; i<lis.length; i++) {
			if(lis[i].lastChild.tagName=="UL"){
			 	lis[i].onmouseover=function() {
				   this.lastChild.style.display="block";
				}
				lis[i].onmouseout=function() {					   
				   this.lastChild.style.display="none";
				}
			}
		}
	}
}

function init() {
	registerLinkEvents();
	ieDropdown('navi'); 
}

window.onload = init;