window.onload=function(){dynMenu()}



//setTimeout('dynMenu()', 1000);




var li = new Array();

dynMenu = function() {
	mu = document.getElementById("menu_principal");
	dls = mu.getElementsByTagName("li");
		
		if (dls){
			 for(var i=0;i<dls.length;i++){
				 if ((dls[i].className=="niv1_exp")||(dls[i].className=="niv1_exp_end")) {li.push(dls[i]);}
			 }
		}



	  for(var i=0;i<li.length;i++) {
				li[i].onmouseover=li[i].onfocus=function(){
					 smenu=this.getElementsByTagName("ul")[0]
						  if(smenu){
							  smenu.style.display="block";
							  }
					}
			

				li[i].onmouseout=function(){
					smenu.style.display="none";
				}
	  
      }  //fin for



} //fin dynmenu