function validate()
{
		if(document.form1.name.value=="")
		{
			alert("Please enter your name !!!");
			document.form1.name.focus();
			return false;
		}

		if (document.form1.tel.value == "")
		  {
			alert("Please enter a value for the \"Contact number\" field.");
			document.form1.tel.focus();
			return (false);
		  }
		
		  // only allow numbers to be entered
		  var checkOK = "0123456789";
		  var checkStr = document.form1.tel.value;
		  var allValid = true;
		  var allNum = "";
		  for (i = 0;  i < checkStr.length;  i++)
		  {
			ch = checkStr.charAt(i);
			for (j = 0;  j < checkOK.length;  j++)
			  if (ch == checkOK.charAt(j))
				break;
			if (j == checkOK.length)
			{
			  allValid = false;
			  break;
			}
			if (ch != ",")
			  allNum += ch;
		  }
		  if (!allValid)
		  {
			alert("Please enter only digit characters in the \"Contact Number\" field.");
			document.form1.tel.focus();
			return (false);
		  }	
}