function check()
{
  var form=document.forms["register"];
	try {
		if (!IsNull(form.email.value))
		{
			if (form.email.value.charAt(0) == "." || form.email.value.charAt(0) == "@" || form.email.value.indexOf('@', 0) ==  - 1 || form.email.value.indexOf('.', 0) ==  - 1 || form.email.value.lastIndexOf("@") == form.email.value.length - 1 || form.email.value.lastIndexOf(".") == form.email.value.length - 1)
			{
				new HintDialog("email","Email address format is not correct! ");
				return false;
			}
		}
		else
		{
			new HintDialog("email","Email not empty! ");
			return false;
		}
	
		if (IsNull(form.Firest_Name.value))
		{
			new HintDialog("Firest_name","Your Firest_Name Not is null, please input!");
			return false;
		}
		
		if (IsNull(form.Last_Name.value))
		{
			new HintDialog("Last_Name","Your last Name Not is null, please input!");
			return false;
		}
		
		
		if (IsNull(form.password.value) || form.password.value.length < 6)
		{
			new HintDialog("password","Password Length must >6,please input!");
			return false;
		}
		
		if (form.password.value != form.re_pass.value)
		{
			form.password.value = '';
			form.re_pass.value = '';
			new HintDialog("password","Two different input password, please re-entry. ");
			return false;
		}
		
		if (IsNull(form.pwdask.value))
		{
			new HintDialog("pwdask","Your password ask Not is null, please input!");
			return false;
		}
		
		if (IsNull(form.pwdkey.value))
		{
			new HintDialog("pwdkey","Your password key Not is null, please input!");
			return false;
		}
	}catch (e){
		alert(e);
		return false;
	}
}