function refresh_captcha(){
	
		$("#captcha_image").attr("src", 'captcha.php?sid=' + Math.random());
		
		//return false;
	
	}
	
	
	function submit_form(){
	
		$("#submit").trigger("click");
			
	}
	

	// doc load

	$(function(){
	
		$(".login_refresh_img").attr("href", "#captcha").click(refresh_captcha);
		
	});