function offers(id) { 

//	var poz_x = (screen.availWidth/2) - (800/2);
//	var poz_y = (screen.availHeight/2) - (800/2);
	var poz_x = 150;
	var poz_y = 150;

	window.open('http://hill.netkreator.pl/offer.php?id=' + id,'','status=no,toolbar=no,menubar=no,scrollbars=yes,location=no,width=600,height=500,left=' + poz_x + ',top=' + poz_y + ',screenX=' + poz_x + ',screenY=' + poz_y);

}