function assignMainNav() {

  var MainNav = $$("#topnav a.dropdown");

	if(MainNav==null)
	  return;

  MainNav.each(function(s){
	var ul = s.up();

	if(ul != null)
	{
	
		ul.onmouseover = function()
		{
			
			
			if(s.next().hasClassName("show")==false)
			s.next().addClassName("show");
			
			if(s.next().hasClassName("hide")==true)
			s.next().removeClassName("hide");
			
			
		}
		
		ul.onmouseout = function()
		{
			if(s.next().hasClassName("hide")==false)
			s.next().addClassName("hide");
			
			if(s.next().hasClassName("show")==true)
			s.next().removeClassName("show");
		}
	
	}
  });




}

function assignPopups() {
var els = $$("a.popup");

	els.each(function(link){
		link.onclick = function() { 
			if(link.hasClassName("pdf"))
			window.open(this.href,'doc',''); 
			else
			window.open(this.href,'page','width=520, height=310'); 
			
			return false;
		}
	});
}

Event.observe(window, 'load', function(){
	//var start1 = assignMainNav();
	var start2 = assignPopups();
});