function open_popup(pURL,name,w,h,scrollbars,resizable)
{
	if (resizable==null) resizable=1;
	if (scrollbars==null) scrollbars=1;
	var top  = ((screen.availHeight-h)/2);
	var left = ((screen.availWidth-w)/2);
	var nyit = window.open(pURL,name,'toolbar=0,location=0,directories=0,status=0,\
		menubar=0,scrollbars='+scrollbars+',resizable='+resizable+',width='+w+',height='+h+',top='+top+',left='+left);
	nyit.focus();
	//return false;
}