function rate(id,stars){
	var divId = 'unit_long'+id;
	$("div#"+divId).html("procesing...");
	$.get("ar.php", {a: 'rate', id: id, stars: stars },function(data){$("div#"+divId).html(data);});
	$("div#"+divId).fadeOut("slow");
	$("div#"+divId).fadeIn("slow",function(){$.get("ar.php", {a: 'get_rating', id: id },function(data){$("div#"+divId).html(data);});});
}

function showEmailFriend(){
	$("div#emailToAFriend").fadeIn("slow");
}

function chImage(img_name, img_src){
   document[img_name].src = img_src;
}

function SelColor(obj, c){
	obj.className = c;
};

function isValidEmail(strEmail){
  validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;
    if (strEmail.search(validRegExp) == -1) {return false;}
    return true; 
}