PositionX = 100;
PositionY = 100;
defaultWidth  = 200;
defaultHeight = 200;
var AutoClose = true;
if (parseInt(navigator.appVersion.charAt(0))>=4){
var isNN=(navigator.appName=="Netscape")?1:0;
var isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;}

function popImage(imageURL){
var optNN='scrollbars=no,status=no,location=no,width='+defaultWidth+',height='+defaultHeight+',left='+PositionX+',top='+PositionY;
var optIE='scrollbars=no,status=no,location=no,width=150,height=100,left='+PositionX+',top='+PositionY;
if (isNN){imgWin=window.open('prova.html?img='+imageURL,'',optNN);}
if (isIE){imgWin=window.open('prova.html?img='+imageURL,'',optIE);}
//imgWin=window.open('about:blank','','width=50,height=50,scrollbar=yes');
}