//重新產生驗證碼
function RebuildVerifyinfCode( obj_verifying_code_img )
{
	var verifying_code_url = obj_verifying_code_img.src.split( "?" );
	verifying_code_url = verifying_code_url[0];
	
	obj_verifying_code_img.src = verifying_code_url + "?" + Math.random();
}