var menuprev= null;  
/*window.onload=function(){
		if(document.getElementsByTagName && document.getElementById){
   	 		document.getElementById("nav").className="jsenable";
   	 		BuildList();
    	}
	}
  */
function InitMenu(){
		if(document.getElementsByTagName && document.getElementById){
   	 		document.getElementById("nav").className="jsenable";
   	 		BuildList();
    	}
}  
function BuildList(){
	var hs=document.getElementById("nav").getElementsByTagName("h3");
	for(var i=0;i<hs.length;i++){
   		hs[i].onclick=function(){
       		if(this.parentNode.className!="show"){
           		this.parentNode.className="show";
           	if(menuprev && menuprev!=this.parentNode) menuprev.className="hide";
           		menuprev=this.parentNode;
           	} else this.parentNode.className="hide";
       	}
   	}
}