var blinkImg = function (imgname, s) {
	clearTimeout(blinkImg['blinking' + imgname]);
	var obj = document.images[imgname];
	if (arguments[1] === 'blink') {
		obj.style.visibility = !(blinkImg[s + imgname] = !blinkImg[s + imgname])? '' : 'hidden';
		blinkImg['blinking' + imgname] = setTimeout(function(){blinkImg(imgname, s);}, 750);
	}
	else {
		blinkImg['blink' + imgname] = false;
		obj.style.visibility = '';
	}
};