function OpenWindowImage (url,alt,width,height) {
//alert ('ok');
//alert (bigImage);
if (bigImage != "") bigImage.close();
var url = url || '';
var alt = alt || '';
var width = width || 400;
var height = height-19 || 400;
var size = 'width='+width+',height='+height;
bigImage = window.open('about:blank','winImage',size+'toolbar=no,menubar=no,scrollbars=no,status=no');
bigImage.document.open();
bigImage.document.write(""+alt+"!["+alt+"]("+url+")
");
bigImage.document.close();
}