function cent(amount) {
// returns the amount in the .99 format
	amount = Math.round(amount*100);
    amount /= 100;
    amount -= 0;
    return (amount == Math.floor(amount)) ? amount + '.00' : (  (amount*10 == Math.floor(amount*10)) ? amount + '0' : amount);
}

function dcent(amount) {
// returns the amount in the .9 format
	amount = Math.round(amount*10);
    amount /= 10;
    amount -= 0;
    return (amount == Math.floor(amount)) ? amount + '.0' : amount;
}

function regular(string) {
     if (!string) return false;
     var Chars = "0123456789-+.";

     for (var i = 0; i < string.length; i++) {
        if (Chars.indexOf(string.charAt(i)) == -1)
        	return false;
     }
     return true;
 } 

function isAnyNum(string) {
     if (!string) return false;
     var Chars = "0123456789";

     for (var i = 0; i < string.length; i++) {
        if (Chars.indexOf(string.charAt(i)) != -1)
			return true;
     }
     return false;
 }