function win_open(source,window_name,w,h,sc){
	ws=screen.availWidth;
	hs=screen.availHeight;
	kl=(ws-w)/2;
	if (kl<0){kl=0;}
	kt=(hs-h)/2;
	if (kt<0){kt=0;}
	var window_params = 'status=no,toolbar=no,scrollbars='+sc+',titlebar=yes,menubar=no,resizable=no,width='+w+',height='+h+',left='+kl+',top='+kt+',directories=no,location=no';
	window.open(source, window_name, window_params);
}


function big_img(id) {
	name_w="win"+id;
	source="/tpls/big_img.php?lang="+lang+"&id="+id;
	win_open(source,name_w,500,400,1);
}