// JavaScript Document
function startList() {
if (document.all&&document.getElementById)
 {
    var navRoot = document.getElementById("nav");
	
	if(navRoot.hasChildNodes())
	{
		navRoot.firstChild.style.marginTop = "0px";
	}
	
    for (i=0; i<navRoot.childNodes.length; i++) 
	{
      var node = navRoot.childNodes[i];
      if (node.nodeName=="LI") 
	  {
       node.onmouseover=function() { this.className+=" over";}
       node.onmouseout=function() { this.className=this.className.replace(" over", "");}
      }
    }
  }
}


function bh_nr(sz)
{	
	for (var i =1 ; i < 4 ; i++)
	{
	    document.getElementById("tt_" + i).className = " ";
		document.getElementById("nr_" + i).style.display = "none";
	}
	document.getElementById("tt_" + sz).className = "over";
	document.getElementById("nr_" + sz).style.display = "block";
}

window.onload=startList;