function CheckNumeric(e)
{
var keynum;
var keychar;
var numcheck;

var specialkeys = '8';


if(window.event) // IE
  {
  keynum = e.keyCode;
  }
else if(e.which) // Netscape/Firefox/Opera
  {
  keynum = e.which;
  }
keychar = String.fromCharCode(keynum);
//alert(keynum);
numcheck = /\d/;
return (numcheck.test(keychar) || keynum=='8' || keynum==undefined);
}