function openApp(obj,w,h){
	pathImage = obj.src.replace("thumbs","img");	
	var l = Math.floor((screen.width-w)/2);
  var t = Math.floor((screen.height-h)/2);
	var opzioni = "width=" + w + ",height=" + h + ",top=" + t + ",left=" + l+"toolbar=0,scrollbars=0,menubar=0"
  window.open("viewImage.asp?src="+pathImage,"viewImge",opzioni);
}