//send rate to ajax page
function send_rate(x, y, language) {
	// change text by language
	if (language == 'arabic')
		text = 'جاري ارسال التقيم';
	else
		text = 'sending your rate';
	document.getElementById("rate_star").innerHTML = text;
	ajaxPageNoLoading('rate_star', "ajax/rate.php", "group_id=" + x
			+ "&rate_value=" + y);
}

// change star image on mouse over
function change_img(img_id, text) {
	for (i = 1; i <= img_id; i++) {
		document.getElementById('star' + i).src = "images/star.png";
	}
	document.getElementById("rate_text").innerHTML = text;
}

// back star image
function back_img(x) {
	for (i = 1; i <= x; i++) {
		document.getElementById('star' + i).src = "images/blackstar.png";
	}
	document.getElementById("rate_text").innerHTML = "";
}