function openWindow(imageName,imageWidth,imageHeight,alt) {
if (self.screen) {
s_width = screen.width
s_height = screen.height
} else {
s_width = imageWidth;
s_height = imageHeight;
}
if (s_width < imageWidth || s_height < imageHeight) {
var scroll;
scroll = 'yes';
} else {
var scroll;
scroll = 'no';
}
if (s_width < imageWidth)
{ imageWidth = s_width-50; }
if (s_height < imageHeight)
imageHeight = s_height-100;
newWindow = window.open("","newWindow","width="+imageWidth+",height="+imageHeight+",scrollbars="+scroll+",left=25,top=5");
newWindow.document.open();
newWindow.document.write(''+alt+'');
newWindow.document.write('
');
newWindow.document.write('');
newWindow.document.close();
newWindow.focus();
}