//=====================================================================
//  DOM Image Rollover v3 (hover)
//
//  Demo: http://chrispoole.com/scripts/dom_image_rollover_hover
//  Script featured on: Dynamic Drive (http://www.dynamicdrive.com)
//=====================================================================
//  copyright Chris Poole
//  http://chrispoole.com
//  This software is licensed under the MIT License 
//  <http://opensource.org/licenses/mit-license.php>
//=====================================================================

function $(element){
  return document.getElementById(element);
}

function highlightnavi(){
   ergebnis = document.URL.match(/\.[\w]{2,3}\/(.*)[\.|\/]/);
   if (ergebnis){
       if (ergebnis[1].search(/\//)!=-1){
           ergebnis = ergebnis[1].match(/(\w*)/);
			 }

			 childrenOfNavi = $('navi').childNodes;
			 
			 for (i=0; i<childrenOfNavi.length; i++){
			     if(childrenOfNavi[i].innerHTML){
					     suche = new RegExp(ergebnis[1]);
							 child = childrenOfNavi[i].firstChild;
							     if(suche.exec(child.href)!=null){
									     image = child.firstChild;
											 image.onmouseover="";
											 image.onmouseout="";
											 image.setAttribute('src',image.className.match(/domroll (\S+)/)[1]);
									}
						}
        }
   }
}


function domRollover() {
	if (navigator.userAgent.match(/Opera (\S+)/)) {
		var operaVersion = parseInt(navigator.userAgent.match(/Opera (\S+)/)[1]);
	}
	if (!document.getElementById||operaVersion <7) return;
	var imgarr=document.getElementsByTagName('img');
	var imgPreload=new Array();
	var imgSrc=new Array();
	var imgClass=new Array();
	for (i=0;i<imgarr.length;i++){
		if (imgarr[i].className.indexOf('domroll')!=-1){
			imgSrc[i]=imgarr[i].getAttribute('src');
			imgClass[i]=imgarr[i].className;
			imgPreload[i]=new Image();
			if (imgClass[i].match(/domroll (\S+)/)) {
				imgPreload[i].src = imgClass[i].match(/domroll (\S+)/)[1]
			}
			imgarr[i].setAttribute('xsrc', imgSrc[i]);
			imgarr[i].onmouseover=function(){
				this.setAttribute('src',this.className.match(/domroll (\S+)/)[1])
			}
			imgarr[i].onmouseout=function(){
				this.setAttribute('src',this.getAttribute('xsrc'))
			}
		}
	 	
	}

highlightnavi();
}