startMenu = function(menuid) {
	var browser = navigator.userAgent.toLowerCase();
	var isIE7 = (browser.indexOf("msie 7")!=-1);
	if (document.all && document.getElementById && !isIE7) {
		navRoot = document.getElementById('navcontainer');
		navLi = navRoot.getElementsByTagName('li');
		for (i=0; i<navLi.length; i++) {
			node = navLi[i];
			if (node.nodeName=='LI') {
				node.onmouseover=function() {
					this.className+=" over";
  				}
				node.onmouseout=function() {
					this.className=this.className.replace(" over", "");
				}
			}
		}
	}
	
	if(document.getElementById){
		/* Opacity style toekennen */
		navRoot = document.getElementById('navcontainer');
		navNodes = navRoot.getElementsByTagName('li');
		if(navNodes.length>0){
			for(var i=0; i<navNodes.length; i++){
				navSub = navNodes[i].getElementsByTagName('ul');
				if(navSub.length>0){
					for(var j=0; j<navSub.length; j++){
						navSub[j].style.KhtmlOpacity	= 0.9;
						navSub[j].style.MozOpacity		= 0.9;
						navSub[j].style.opacity			= 0.9;
					}
				}
			}
		}
		navSub   = null,
		navRoot  = null,
		navNodes = null;
	}
	
	rolloverImages(menuid);
}

rolloverImages = function(menuid){
	if(document.getElementById){
		navRoot = document.getElementById('navcontainer');
		imgRoot = navRoot.getElementsByTagName('img');
		for (var i=0; i<imgRoot.length; i++){
			if(menuid==i){
				imgRoot[i].src = imgRoot[i].src.replace(".gif","-mouse.gif");
			}else{
				imgRoot[i].onmouseover = function(){
					this.src = this.src.replace(".gif","-mouse.gif");
				}
				imgRoot[i].onmouseout = function(){
					this.src = this.src.replace("-mouse","");
				}
			}
		}
	}
}