function toggle_sub(id)
{
	var el = document.getElementById('submenu_'+id);
	if(el.style.display == "" || el.style.display == "none")
	{
		closeAllSubs();
		el.style.display = "block";
	}
	else
	{
		closeAllSubs();
		el.style.display = "none";
	}
}

function close_sub(id)
{
	var el = document.getElementById('submenu_'+id);
	el.style.display = "none";

}

var allHTMLTags = new Array();

function closeAllSubs() 
{

	var allHTMLTags=document.getElementsByTagName("div");
	
	for (i=0; i<allHTMLTags.length; i++) {
	
		if (allHTMLTags[i].className=='submenu') {
				
			allHTMLTags[i].style.display='none';
		
		}
	}
}