function popup(mylink, windowname, wdth, hth)
{
if (! window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
else
   href=mylink.href;
window.open(href, windowname, 'width='+wdth+',height='+hth+',scrollbars=yes');
return false;
}

function accpopup(selectname)
{
    if (! window.focus)return true;
    var x=document.getElementById(selectname);
    var index=x.selectedIndex;
    if(x.options[index].value == undefined) return false;
    window.open('/ProductPreview/' + x.options[index].value, 'ProudctPreview', 'width=760,height=600,scrollbars=yes');
    return false;
}