function popup(f,nom, w, h) {
   var top=0;
   var left=0;
   if (self.screen)
      left=(screen.width-(w+((screen.width*1)/100)));
   myWin = window.open(f, nom, 'resizable,screenX=0,screenY=0,scrollbars=yes,menubar=yes,top='+top+',left='+left +',width=' + w + ',height=' + h );
   myWin.focus();
}
// SHOW MENU
function showTipBox(layerName){
 layer=document.getElementById(layerName);
 layer.style.visibility='visible';
 timeOn = setTimeout("hideTipBoxTimer()",1000,layerName);
}

function hideTipBoxTimer(layerName)
{
 //alert(layerName);
 layer=document.getElementById(layerName);
 layer.style.visibility='hidden';
}