function changeOpenMenu(id){ 
var all_uls = new Array(); 
all_uls[0]='ul_selected'; 
for(i=0;i<all_uls.length;i++){ 
document.getElementById(all_uls[i]).style.display = 'none'; 
} 
the_ul = document.getElementById(id); 
the_ul.style.display = 'block'; 
clearButtons(); 
} 
function clearButtons() { 
if (!document.getElementsByTagName) return; 
var anchors = document.getElementsByTagName("a"); 
for (var i=0; i<anchors.length; i++) { 
var anchor = anchors[i]; 
anchor.blur(); 
} 
}