function showsubmenu($sid){
    var temp=document.getElementById($sid);	
    if (temp.style.display == 'none'){
		document.cookie = "lastmenu=" + escape($sid); 
        temp.style.display='block';
    }
    else{
		document.cookie = "lastmenu=" + escape('') ;
        temp.style.display='none';
    }
}