/*  THE FOLLOWING TWO FUNCTIONS CHECK THAT ALL NUMERIC VALUES ARE REAL NUMBER AND REMOVE DOUBLE DECIMALS */
function doSum(a){ 
   a.value = check(a.value);
}

function check(a) 
{
   var pest = 0;
   var b = "";
   for(i=0;i<=a.length;i++)
   {
   var u = a.charAt(i);
      if((u>="0"&&u<="9")||u==".")
      {
      	if(u=="."){
      	var pest = pest+1
      	if(pest==2) {
      		break;
      	}
      }
		var b = b + u;
      }
   }
return b;
}

/* FUNCTION CONFIRMS THAT THE VALUE ENTERED INTO A FIELD FALLS WITHIN THE PRE-DETERMINED MINIMUM AND MAXIMUM VALUES */
function checkNumber(quest,input, min, max, msg)
{

    var str = input.value;
    for (var i = 0; i < str.length; i++) {
        var ch = str.substring(i, i + 1)
        if ((ch < "0" || "9" < ch) && ch != '.') {
            alert(msg);
            return false;
        }
    }
    if(input.value!="")
    {
    var num = 0 + str
    if (num < min || max < num) {
 var sendn = msg + "\n";
    var sendq = "You have entered " + input.value + ". Please enter a number between " + min + " and " + max + ".";
  fixpro(sendn,sendq);

        return false;
    }
    input.value = str;
    return true;
	}
	

}


/* CALLS UPON THE FUNCTIONS TO DETERMINE IF THE NUMBERS ENTERED ARE VALID AND TO CALCULATE THE RESULTS OF THE ENTERED DATA */
function computeField(quest,input,min,max,msage)
{
doSum(input); 
checkNumber(quest,input,min,max,msage);     
}        

/* ROUNDS OFF MONETARY NUMBERS TO TWO DECIMALS (PENNIES) */

function roundPen(n)
{
if(n > 0){
pennies = n*100;
pennies = Math.round(pennies);
strPennies = "" + pennies;
len = strPennies.length;
return strPennies.substring(0, len - 2) + "." + strPennies.substring(len -2, len);
}
else return 0;
}

/* TESTS VERSIONS FOR WHICH WILL SUPPORT POP UP WINDOWS */
function versTest()
{
var one = '';
var two = '';

if (
(navigator.appName.substring(0,8)=="Netscape" && (navigator.appVersion.substring(0,3) == "3.0" ||  navigator.appVersion.substring(0,3) =="4.0")))
{var one='true';}
if(
 (navigator.appName.substring(0,9) == "Microsoft" && navigator.appVersion.substring(0,3) == "3.0" && navigator.appVersion.indexOf("Macintosh")>=0))
{var two='true';}

if(one=='true' || two=='true' ||
(navigator.appName.substring(0,9) == "Microsoft" && navigator.appVersion.indexOf("MSIE 3.0")>=0 && 
navigator.appVersion.indexOf("Windows 3.1")>=0)
)
{return true;}
else
{return false;}


}

/* TESTS IF VERSION IS MSIE 3.0 FOR MAC */
function msTest()
{
if(navigator.appName.substring(0,9) == "Microsoft" && 		(navigator.appVersion.substring(0,3) == "3.0" && navigator.appVersion.indexOf("Macintosh")>=0))
{return true;}
else
{return false;}

}


function nineTest()
{
if(navigator.appName.substring(0,9) == "Microsoft" && (navigator.appVersion.substring(0,3)=="3.0" || navigator.appVersion.indexOf("MSIE 3.0")>=0) && (navigator.appVersion.indexOf("Macintosh")==-1 || navigator.appVersion.indexOf("Windows 3.1")== -1)
)
{return true;}
else
{return false;}
}

function browTest()
{
if((navigator.appVersion.substring(0,3) == 3.0 || navigator.appVersion.substring(0,3) == 4.0)&& navigator.appName.substring(0,8)=="Netscape"){
	return true;
}
else{
	return false;
}
}


function fixpro(n,q)

{

	if(versTest() == true){
		if(msTest()==true){
			var winNam='';
		}
		else{
			var slash = location.href.lastIndexOf("/")+1;
			var filNam = location.href.substring(0,slash);
			var winNam = filNam+'maxem.asp';
		}

if(navigator.appName.substring(0,8) == "Netscape")
{
			alert(n+'\n'+q)
			
		}

}
else{alert(n+'\n'+q)}
}

function StringArray(n)
{
this.length = n;
for (var i = 1; i <= n; i++)
this[i] = '' 
return this
}