function IsNumeric(strString, decimals)
   //  check for valid numeric strings	
   {
	var strValidChars = "0123456789";
	var strChar;
	var blnResult = true;

	if (decimals)
		strValidChars = strValidChars + ".,";

   if (strString.length == 0) return false;

   //  test strString consists of valid characters listed above
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
   }
   
function ValidateEmail(origin)
{
    // Email adress regular expression
    myRE = new RegExp(/^[\w-\.]{1,}\@([\da-zA-Z-]{1,}\.){1,}[\da-zA-Z-]{2,3}$/);

    results = myRE.exec(origin); 
    
    return (results!=null);
}