//Regenera los captcha en todas las imagenes con nombre captchaImage.
function reloadCaptchas(){
	
	var rnd = Math.floor(Math.random() * 9999999999999);

	var captchaImages = document.getElementsByName("captchaImage");
	for(var i=0;i<captchaImages.length;i++){
		var captchaImage = captchaImages[i];
		var src = captchaImage.src;
		var pos = src.indexOf('?');
		if (pos >= 0) {
			src = src.substr(0, pos);
		}
		captchaImage.src = src + '?rnd=' + rnd + '&reload=true';
	}
	
}