function showOrHideBlok(Eid) {
var id = Eid;
var blok = document.getElementById(id);
if (blok.style.display == "none") {
blok.style.display = "block";
} else {
blok.style.display = "none";
}
} 

<!--//--><![CDATA[//><!--
		startList = function() {
			if (document.all&&document.getElementById) {
				navRoot = document.getElementById('nav');
				for (i=0; i<navRoot.childNodes.length; i++) {
					node = navRoot.childNodes[i];
					if (node.nodeName=='LI') {
						node.onmouseover=function() {
							this.className+=' over';
						}
						node.onmouseout=function() {
							this.className=this.className.replace(' over', '');
						}
					}
					//window.alert(navRoot.childNodes[i].childNodes.length);
					for (j=0; j<navRoot.childNodes[i].childNodes.length; j++) {
						nodeS = navRoot.childNodes[i].childNodes[j];
						//window.alert(nodeS.nodeName);
						if (nodeS.nodeName=='UL') {
							for (k=0; k<nodeS.childNodes.length; k++) {
								nodeK = nodeS.childNodes[k];
								if (nodeK.nodeName=='LI') {
									nodeK.onmouseover=function() {
										this.className+=' over';
									}
									nodeK.onmouseout=function() {
										this.className=this.className.replace(' over', '');
									}
								}
							}
						}
					}
				}
				navRoot1 = document.getElementById('nav2');
				for (i=0; i<navRoot1.childNodes.length; i++) {
					node = navRoot1.childNodes[i];
					if (node.nodeName=='LI') {
						node.onmouseover=function() {
							this.className+=' over';
						}
						node.onmouseout=function() {
							this.className=this.className.replace(' over', '');
						}
					}
				}
				
			}
		}
		window.onload=startList;
//--><!]]>