function IsNumeric(sText)
{	
    var ValidChars = "0123456789";
    var IsNumber=true;
    var Char;
   for (i = 0; i < sText.length && IsNumber == true; i++) 
       { 
       Char = sText.charAt(i); 
       if (ValidChars.indexOf(Char) == -1) 
          {
          IsNumber = false;
          }
       }
    //return IsNumber;
}
function check()
{
		
	//check required field
	if (contact.name.value == ""  || contact.EMAIL.value == "" || contact.PHONE.value == "" || contact.DES.value == "") 
	{
		alert( " you have not filled a required field " );
		return false ;
	}

//check email
	var vld_email= /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/ ;
	if (!vld_email.test(contact.EMAIL.value)) 
	{ 
		alert("Invalid E-mail Address! Please re-enter.") 
		contact.EMAIL.focus();
		return (false);
	} 	
	
/*	if((contact.PHONE.value) != "")
	{
		var Phone1 = (contact.PHONE.value);
		if(!IsNumeric(Phone1))
		{
			alert("The  Phone number doesn't appear to be a valid Phone Number.  Please enter numbers only.");
			contact.PHONE.focus();
			return false;
		}
	}	*/
	return true;
}