function showSubMenu(){
   var objUL2;
   objUL2 = this;
   while (objUL2.parentNode.id!="menubar")
   {
      objUL2 = objUL2.parentNode;
   }
   changeToActive(objUL2);
}
function hideSubMenu()
{
   var objUL;
   objUL = this
   while (objUL.parentNode.id!="menubar")
      	{
		objUL = objUL.parentNode;
	}
	changeToInactive(objUL)
}
function initialiseMenu()
{	
   var menubar = document.getElementById("menubar");
    var objLICollection = menubar.getElementsByTagName("LI");        
    for(var i = 0; i < objLICollection.length; i++)
    {
         var objLI = objLICollection[i];        
         for(var j = 0; j  < objLI.childNodes.length; j++)
        {	
            if(objLI.childNodes.item(j).nodeName == "UL")
            {
                objLI.onmouseover=showSubMenu;
                objLI.onmouseout=hideSubMenu;        
                
            }
        }
    }
}
function changeToActive(obj)
{
	obj.childNodes.item(0).childNodes.item(0).className="menuactive";
	obj.className = "liactive";	
	obj.childNodes.item(0).className = "aactive";
}
function changeToInactive(obj)
{
	obj.childNodes.item(0).className = "";
	obj.className = "expand";
	obj.childNodes.item(0).childNodes.item(0).className = "menuitem";
}
function handleEnter (field, event) {
		var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
		if (keyCode == 13) {
			var i;
			for (i = 0; i < field.form.elements.length; i++)
				if (field == field.form.elements[i])
					break;
			i = (i + 1) % field.form.elements.length;
			//field.form.elements[i].focus();
			var form = document.forms[0];
			if (field.name == 'assVariety') 
			{
				window.location='../frmAssSearchResults?openform&main=' + form.assMainCategory.options[form.assMainCategory.options.selectedIndex].text + '&crop=' + form.assCrop.options[form.assCrop.options.selectedIndex].text  + '&croptype=' +  form.assCropType.options[form.assCropType.options.selectedIndex].text  + '&query=' + form.assVariety.value + '&ref=' + form.RootId.value;
				return false;
			}
			else if (field.name == 'Query')
			{
				openSearchForm();
				return false;
			}			
		} 
		else
		return true;
	}