/*
    This javascript file contains the functions used by the 
    online calculator
    
    Date        Developer   Remark
    ----------------------------------------------------------
    2004/04/08  Rain        First version
*/


function checkKeyPressOnlyInteger(){
	if (event.keyCode >= 48 && event.keyCode <= 57)
		return true;
	else
		return false;
}

function checkKeyPressOnlyInteger(e){
	var keyCode;
	(isIE()) ? keyCode = e.keyCode : keyCode = e.which;
	if ((keyCode >= 48 && keyCode <= 57) || keyCode==8 || keyCode==0)
		return true;
	else
		return false;
}

function checkKeyPressOnlyDouble(){

	if ( ( event.keyCode >= 48 && event.keyCode <= 57 ) || event.keyCode== 46 )
		return true;
	else
		return false;
}

function checkKeyPressOnlyDouble(e){
	var keyCode;
	(isIE()) ? keyCode = e.keyCode : keyCode = e.which;
	if ( ( keyCode >= 48 && keyCode <= 57 ) || keyCode== 46 || keyCode==8 || keyCode==0)
		return true;
	else
		return false;
}


function round(n,X) {
	// rounds number to X decimal places, defaults to 2
	X = (!X ? 2 : X);

	if (Number.prototype.toFixed != '') {
        n = new Number(n);
		return n.toFixed(X);
	}
    
	return Math.round(n*Math.pow(10,X))/Math.pow(10,X);
}

function floor(n,X) {
	// truncate number to X decimal places, defaults to 2
	X = (!X ? 2 : X);

	//if (Number.prototype.toFixed != '') {
    //    n = new Number(n);
	//	return n.toFixed(X);
	//}
    
	return Math.floor(n*Math.pow(10,X))/Math.pow(10,X);
}

function raiseP(x,y)
{ 
    total=1;
    for (j=0; j<y; j++)
    { total*=x; }
    return total; //result of x raised to y power
}

function commaSplit(srcNumber) {
    var txtNumber = '' + srcNumber;
    if (isNaN(txtNumber) || txtNumber == "") {
        fieldName.select();
        fieldName.focus();
    } else {
        var rxSplit = new RegExp('([0-9])([0-9][0-9][0-9][,.])');
        var arrNumber = txtNumber.split('.');
        arrNumber[0] += '.';
        do {
            arrNumber[0] = arrNumber[0].replace(rxSplit, '$1,$2');
        } while (rxSplit.test(arrNumber[0]));
        
        if (arrNumber.length > 1) {
            return arrNumber.join('');
        } else {
            return arrNumber[0].split('.')[0];
        }
    }
}

var winRate;

function popRateMessageBox(ebwUrl)
{
    sTitle = "Exchange_Rate_Table";

    sUrl = ebwUrl;
    sProps = "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no,width=750,height=450,left=" + getXPos(750) + ",top=" + getYPos(450);

    var isActive = new String( typeof(winRate));
    if (isActive!="object" || winRate.closed)
    {
        winRate = window.open(sUrl,sTitle,sProps);
        winRate.window.focus();
    }
    else
    {
        winRate.window.location.href = sUrl;
        winRate.window.focus();
    }
}


   //remove the leading zero in the amount input box
   function removeLeadZero(num, decimalNum, bolLeadingZero, bolParens)
   /* IN - num:            the number to be formatted
           decimalNum:     the number of decimals after the digit
           bolLeadingZero: true / false to use leading zero
           bolParens:      true / false to use parenthesis for - num

      RETVAL - formatted number
   */
   {
       var tmpNum = num;

       // Return the right number of decimal places
       tmpNum *= Math.pow(10,decimalNum);
       tmpNum = Math.floor(tmpNum);
       tmpNum /= Math.pow(10,decimalNum);

       var tmpStr = new String(tmpNum);

       // See if we need to hack off a leading zero or not
       if (!bolLeadingZero && num < 1 && num > -1 && num !=0)
           if (num > 0)
               tmpStr = tmpStr.substring(1,tmpStr.length);
           else
               // Take out the minus sign out (start at 2)
               tmpStr = "-" + tmpStr.substring(2,tmpStr.length);                        


       // See if we need to put parenthesis around the number
       if (bolParens && num < 0)
           tmpStr = "(" + tmpStr.substring(1,tmpStr.length) + ")";


       return tmpStr;
   }



function CurrencyFormatted(amount)
{
    var i = parseFloat(amount);
    if(isNaN(i)) { i = 0.00; }
    var minus = '';
    if(i < 0) { minus = '-'; }
    i = Math.abs(i);
    i = parseInt((i + .005) * 100);
    i = i / 100;
    s = new String(i);
    if(s.indexOf('.') < 0) { s += '.00'; }
    if(s.indexOf('.') == (s.length - 2)) { s += '0'; }
    s = minus + s;
    return s;
}


function appendZero(val) {
	val = String(val);

	dec = val.indexOf(".");
	if (dec > 0)
	{

		dollars = val.substring(0,dec);
        
		cents = val.substring(dec+1,dec+3);
		cents = (cents.length < 2) ? cents + "0" : cents;
		val = dollars + "." + cents;
	} else {
		val = val + "." + "00";
	}
	return val;
}


function formatNumComma(inStr) {
	var splittedStr = "", convertStr = "";

	if (inStr.indexOf(".") == -1) {
		convertStr = inStr;
	} else {
		// split string
		splittedStr = inStr.split(/\./);
		convertStr = splittedStr[0];
	}

	// insert commas
	var threeNoRE  = new RegExp('(-?[0-9]+)([0-9]{3})');
	while(threeNoRE.test(convertStr)) {
		convertStr= convertStr.replace(threeNoRE, '$1,$2');
	}

	if (inStr.indexOf(".") != -1) {
		convertStr = convertStr + "." + splittedStr[1];
	}
	return convertStr;
}

function displayInteger(n) {
    return commaSplit(n);
}

function displayFloat(n) {
    return commaSplit(appendZero(n));
}


function log10(i) {
	return Math.log( i ) * Math.LOG10E;
}