// *********************
// check if textfield contains a number	  
function gIsaNumber(boxName)    {
   var fieldString = boxName.value
   var okChars = "0123456789.-,$%";
   var strChar;
   var strCheck = true;
   var fieldNumber = "" ;
   var count ;
if (fieldString.length == 0) {boxName.value = 0}
else {
   for (count = 0; count < fieldString.length && strCheck == true; count++) {
     strChar = fieldString.charAt(count);
     if (okChars.indexOf(strChar) == -1) {strCheck = false;}
     else if (strChar == ",") {strChar ="" ;}
  	 else if (strChar == "$") {strChar ="" ;}
 	 else if (strChar == "%") {strChar ="" ;}
	 else {fieldNumber = fieldNumber + strChar ;}
	 }  // end For .. Next
	 if (strCheck) {boxName.value = fieldNumber;}
	 else {
	 gShowError(boxName) ;
     alert("Please replace this non numeric value!");
	 } // end if
	 } // end else
	 return strCheck ;
   } // end function

// *********************
// ensure that number in textfield is read as a number
function gReadNumber(inputVar){
var varValue ;
if (inputVar >= 0) {varValue = Math.abs(inputVar) ;}
else {varValue = - Math.abs(inputVar) ;}
return varValue ;
}

// *********************
// focus on errant textfield	  
function gShowError(boxName)    {  
   boxName.select() ;
   boxName.focus() ;
   }
   
// *********************
// This function uses gIsaNumber(boxName) to check the cotents of each input box
function gCheckInput ()    {  
var count ;
var numCheck ;
var check = true ;
for (count = 0; count < document.inputForm.elements.length -1; count++) {
if (document.inputForm.elements[count].type == "text") { // only look at text fields
numCheck = gIsaNumber(document.inputForm.elements[count]) ;
if (!numCheck) {check = false;}
}
}
return check
   } // end function

// *********************

// this function formats dollar amounts to change
// $.56 to $0.56
// $-4.76 to -$4.76
// the input value X is a number that has been rounded to the desired number of places
function gPrintMoney (X) {
var msg

if (X < -1) {msg = "-$" + Math.abs(X) ;}
else if (X < 0) {msg = "-$0" + Math.abs(X) ;}
else if (X < 1) {msg = "$0" + X ;}
else {msg = "$" + X ;}

return msg;

}  // end function

// *********************

function gPrintRow(col1, col2, col3, col4, col5) {
document.write("<TR> <TD>", col1,"</TD><TD>", col2,"</TD><TD>", col3,"</TD> <TD>", col4,"</TD> <TD>", col5,"</TD></TR>\n");
}  // end function

// *********************