function validateDollar( fld )
{
   var temp_value = fld;

   if (temp_value == "")
   {
     fld = "$0.00";
     return;
   }
   var Chars = "0123456789.,$";
   for (var i = 0; i < temp_value.length; i++)
   {
       if (Chars.indexOf(temp_value.charAt(i)) == -1)
       {
           alert("Invalid Character(s)\n\nOnly numbers (0-9), a dollar sign, a comma, and a period are allowed in this field.");
           //fld.focus();
       //fld.select();
           return false;
       }
   }
}

function GoodDecimal(S) {
    return /^\d+\.\d+$/.test(S);
}


function currency( num )
{
   var prefix = "$";
   var suffix = "";
   if ( num < 0 )
   {
       prefix = "($";
       suffix = ")";
       num = - num;
   }
       var temp = Math.round( num * 100.0 ); // convert to pennies!
       if ( temp < 10 ) return prefix + "0.0" + temp + suffix;
       if ( temp < 100 ) return prefix + "0." + temp + suffix;
       temp = prefix + temp; // convert to string!
       return temp.substring(0,temp.length-2) + "." + temp.substring(temp.length-2) + suffix;
}