function dropdown(el, container)
{   
    if ($$('.' + container + ' .content')[0].empty() || $(el).hasClassName('active'))
	   return false;
	
    Effect.toggle(el, 'appear', {
	    duration: 0, 
	    afterFinish: function(){$(container).removeClassName('active');}
    });		
}


startList = function() {
if (document.all&&document.getElementById) {
navRoot = document.getElementById("nava");
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.onload=startList;