// JavaScript Document
function showmenu(strID){ 
    var i; 
    for(i=1;i<=2;i++){ 
        var lay; 
        lay = eval('lay' + i); 
        if (lay.style.display=="block" && lay!=eval(strID)){ 
            lay.style.display = "none"; 			
        } 
    } 
    if (strID.style.display=="none"){ 
        strID.style.display = "block"; 		
    }else{ 
        strID.style.display = "none"; 
    } 
}