function img_zoom(prcode)
{
var full_link = 'http://silverfish.com/Merchant5/' + prcode;
zoom_image = window.open('','',"menubar=0,height=500,width=900,toolbar=0,statusbar=0,directories=0,scrollbars=0");
zoom_image.document.write('Silverfish');
zoom_image.document.write("");
zoom_image.document.close();
}