var zoomHwnd;
function doZoomImage(img_url) {
if (zoomHwnd){
zoomHwnd.close();
}
zoomHwnd = wOpen("", "", 600, 400, "1",
"Fotografia", ",resizable=1");
}
function wOpen( pURL, pName, w, h, scroll, text, specialSettings ) {
xLeft=(screen.width)?(screen.width-w)/2:0;
xTop=(screen.height)?(screen.height-h)/2:0;
xSettings = 'height='+h+',width='+w+',scrollbars='+scroll+specialSettings
hwnd = window.open(pURL,pName,xSettings);
if(hwnd.window.focus){hwnd.window.focus();}
if(text != "") hwnd.document.write(text);
hwnd.document.close();
return hwnd;
}