function popUpArticle(img_id,num,width,height){
	window.open('popup.php?img_id='+img_id+'&num='+num+'&img_width='+width+'&img_height='+height,'_preview','width='+width+',height='+height+',left='+((screen.availWidth-width)/2)+',top='+((screen.availHeight-height)/2)+',menubar=no,status=yes,directories=no,resizable=no');
	return false;
}
function popUpWindow(href,name,width,height){
	window.open(href,name,'width='+width+',height='+height+',left='+((screen.availWidth-width)/2)+',top='+((screen.availHeight-height)/2)+',menubar=no,status=yes,directories=no,resizable=no,scrollbars=yes');
	return false;
}