//		is input a Digit?
		
		function isDigit(c)
		    {
		    var test = "" + c;
		    if (test == "0" || test == "1" || test == "2" || test == "3" || test == "4" 
		    || test == "5" || test == "6" || test == "7" || test == "8" || test == "9")
		        {
		        return true;
		        }
		    return false;
		    }

//		is input All Digits?
				
		function isAllDigits(s)
		    {
		    var test = "" + s;
		    for (var k = 0; k < test.length; k++)
		        {
		        var c = test.substring(k, k+1);
		        if (isDigit(c) == false)
		            {
		            return false;
		            }
		        }
		    return true;
		    }
			
//		phone number with STD

			
		function TestSTD(Mailform,tel2,TheValue)
		    {			
		    if (Mailform.tel2.value.length < 4)
		        {
		        alert("Please enter a phone number, including area code!");
		        return false;
		        }

		    if (isAllDigits(Mailform.tel2.value) == false)
		        {
		        alert("Bad character in STD code, please correct!");
		        return false;
		        }
		    return true;
		    }
	
		function TestPhone(Mailform,tel,TheValue)
		    {

		    if (Mailform.tel.value.length < 6)
		        {
		        alert("Please enter a phone number!");
		        return false;
		        }	

		    if (isAllDigits(Mailform.tel.value) == false)
		        {
		        alert("Bad character in phone number, please correct!");
		        return false;
		        }		   
		    return true;
		    }
						
		// end of code -->