var last;
var clk;
function SS_gso(objectId) {
 if(document.getElementById && document.getElementById(objectId)) { 
  return document.getElementById(objectId).style;
 } else if (document.all && document.all(objectId)) {        
  return document.all(objectId).style;
  
 } else if (document.layers && document.layers[objectId]) { 
  return document.layers[objectId];
 } else {       
  return false;
 }
}
function getposOffset(what, offsettype){
 var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
 var parentEl=what.offsetParent; 
 while (parentEl!=null){
  totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
  parentEl=parentEl.offsetParent;
 }
 return totaloffset;
}

function MostraFoto(id,user ) {
 obj = SS_gso(id);
 
 if(last){
  last.display='none';
 }
 obj.left = getposOffset(user, "left") + 118 +"px";
 obj.top = getposOffset(user, "top")-159+"px";
 obj.display='block';
 last=obj;
 clk=2;
}

function ChiudiFoto(){
 if (clk!=0){
  clk--;
  if (clk==1){
    clk=0;
    last.display='none';
  }
 }
}