function showMenu(id,posx,posy){
	hideOthers(id);
	var m = document.getElementById('imgLogo');
	var Vx = getAbsPos(m,"Left") ; 
	var Vy = getAbsPos(m,"Top") ;
	var elt = document.getElementById(id);
	elt.style.display = 'block';
	elt.style.left = Vx+posx+'px';
	elt.style.top = Vy+posy+'px';
}
function hideMenu(id){
	var elt = document.getElementById(id);
	elt.style.display = 'none';
}
function hideOthers(id){
		var tab = ['ss-menu1','ss-menu2','ss-menu3','ss-menu4'];
		for(var i=0;i<tab.length;i++){
			if(id!=tab[i]){
				hideMenu(tab[i]);
			}
		}
}
function getAbsPos(elt,which) 
{
 iPos = 0;
 while (elt != null) 
	 {
	  iPos += elt["offset" + which];
	  elt = elt.offsetParent;
	 }
 return iPos;
}