function enlargeImage(img, w, h){
var imgSrc = img.src.replace('thumb', 'large');
var imgTitle = img.title;
var isScrollbarsVisible = 0;
if( h > screen.availHeight ) {
h = (document.all) ? screen.availHeight-30 : screen.availHeight;
isScrollbarsVisible = 1;
}
if( w > screen.availWidth ) {
w = screen.availWidth;
isScrollbarsVisible = 1;
}
var winTop = Math.floor((screen.availHeight - h) / 2) - (document.all ? 15 : 0);
var winLeft = Math.floor((screen.availWidth - w) / 2);
newWin = window.open('', null, 'width='+w+',height='+h+',location=0,menubar=0,scrollbars='+isScrollbarsVisible+',status=0,toolbar=0,top='+winTop+',left='+winLeft);
newWin.document.body.style.margin = '0px';
newWin.document.body.style.padding = '0px';
newWin.document.open();
newWin.document.write('');
newWin.document.write('');
newWin.document.write('');
newWin.document.write(''+imgTitle+'');
newWin.document.write('');
newWin.document.write('
');
newWin.document.write('');
newWin.document.close();
}