function ShowSubMenu(li)
{
    var ul = li.getElementsByTagName('ul')[0];
    
	ul.style.display = 'block'; 
	ul.style.height=0;
	ul.style.filter=''; 
	ul.style.opacity = 1; 
	ul.style.overflow='visible';
}

function HideSubMenu(li)
{
    var ul = li.getElementsByTagName('ul')[0];
    ul.style.overflow='hidden';
}

function ShowImage(li, bgType, url)
{
 /*
    var img = li.getElementsByTagName('img')[0];
    img.src = url; 
    img.style.visibility = (url == null) ? 'hidden' : 'visible';
    */  
    //li.style.background = (url == null) ? '' : 'url(' + url + ') 0 0 repeat-x';    
     switch (bgType)
     {
       case 'image' :
         li.style.background = (url == null) ? '' : 'url(' + url + ') 0 0 repeat-x';  
         break;
         
       case 'color' :
         li.style.background = (url == null) ? '' : url;
         break;
     }
}