function openwin(url,win_t,win_h,win_w)
{
	if (win_h==null) win_h='374';
	if (win_w==null) win_w='520';
	
	furl="../detail/" + url + ".htm"
		
	window.name="mainwin"
	if (win_t=="detail") window.open(furl, win_t, 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width='+win_w+',height='+win_h);
	if (win_t=="product") window.open(furl, win_t, 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width='+win_w+',height='+win_h);
}