function cDbl(tNumber) {
	// converts a string to a number and removes commas
	
	var nReturn;
	// strip out all commas
	tNumber = tNumber.toString()
	nNumber = parseFloat(tNumber.replace(/\,/g, ""))
	
	if (isNaN(nNumber)) 
		nReturn = 0;
	else
		nReturn = nNumber;

	return nReturn;
}

function isNumber(nNumber) {
	// strip out all commas
	nNumber = parseFloat(nNumber.replace(/\,/g, ""))
	
	if (isNaN(nNumber))
		return false;
	else
		return true;
}


function zFormat(ptData, ptType) {
	// conversion for formatting values for this application
	var tReturn;
	
	if (ptType == "$") {
		ptData = cDbl(ptData);

		tReturn = formatNumber(ptData, "#,##0.00");
	}
	else if (ptType == "I") {
		// integer comma seperated
		ptData = cDbl(ptData);

		tReturn = formatNumber(ptData, "#,##0");
	}
	else if (ptType == "C") {
		// number with no formatting used for calculations
		ptData = cDbl(ptData);
		
		tReturn = formatNumber(ptData, "0");
	}
	
	return(tReturn);
}

	//http://members.ozemail.com.au/~dcrombie/format.html

   // CONSTANTS
  var separator = ",";  // use comma as 000's separator
  var decpoint = ".";  // use period as decimal point
  var percent = "%";
  var currency = "$";  // use dollar sign for currency

  function formatNumber(number, format, print) {  // use: formatNumber(number, "format")
    if (print) document.write("formatNumber(" + number + ", \"" + format + "\")<br>");

    if (number - 0 != number) return null;  // if number is NaN return null
    var useSeparator = format.indexOf(separator) != -1;  // use separators in number
    var usePercent = format.indexOf(percent) != -1;  // convert output to percentage
    var useCurrency = format.indexOf(currency) != -1;  // use currency format
    var isNegative = (number < 0);
    number = Math.abs (number);
    if (usePercent) number *= 100;
    format = strip(format, separator + percent + currency);  // remove key characters
    number = "" + number;  // convert number input to string

     // split input value into LHS and RHS using decpoint as divider
    var dec = number.indexOf(decpoint) != -1;
    var nleftEnd = (dec) ? number.substring(0, number.indexOf(".")) : number;
    var nrightEnd = (dec) ? number.substring(number.indexOf(".") + 1) : "";

     // split format string into LHS and RHS using decpoint as divider
    dec = format.indexOf(decpoint) != -1;
    var sleftEnd = (dec) ? format.substring(0, format.indexOf(".")) : format;
    var srightEnd = (dec) ? format.substring(format.indexOf(".") + 1) : "";

     // adjust decimal places by cropping or adding zeros to LHS of number
    if (srightEnd.length < nrightEnd.length) {
      var nextChar = nrightEnd.charAt(srightEnd.length) - 0;
      nrightEnd = nrightEnd.substring(0, srightEnd.length);
      if (nextChar >= 5) nrightEnd = "" + ((nrightEnd - 0) + 1);  // round up

 // patch provided by Patti Marcoux 1999/08/06
      while (srightEnd.length > nrightEnd.length) {
        nrightEnd = "0" + nrightEnd;
      }

      if (srightEnd.length < nrightEnd.length) {
        nrightEnd = nrightEnd.substring(1);
        nleftEnd = (nleftEnd - 0) + 1;
      }
    } else {
      for (var i=nrightEnd.length; srightEnd.length > nrightEnd.length; i++) {
        if (srightEnd.charAt(i) == "0") nrightEnd += "0";  // append zero to RHS of number
        else break;
      }
    }

     // adjust leading zeros
    sleftEnd = strip(sleftEnd, "#");  // remove hashes from LHS of format
    while (sleftEnd.length > nleftEnd.length) {
      nleftEnd = "0" + nleftEnd;  // prepend zero to LHS of number
    }

    if (useSeparator) nleftEnd = separate(nleftEnd, separator);  // add separator
    var output = nleftEnd + ((nrightEnd != "") ? "." + nrightEnd : "");  // combine parts
    output = ((useCurrency) ? currency : "") + output + ((usePercent) ? percent : "");
    if (isNegative) {
      // patch suggested by Tom Denn 25/4/2001
      output = (useCurrency) ? "(" + output + ")" : "-" + output;
    }
    return output;
  }

  function strip(input, chars) {  // strip all characters in 'chars' from input
    var output = "";  // initialise output string
    for (var i=0; i < input.length; i++)
      if (chars.indexOf(input.charAt(i)) == -1)
        output += input.charAt(i);
    return output;
  }

  function separate(input, separator) {  // format input using 'separator' to mark 000's
    input = "" + input;
    var output = "";  // initialise output string
    for (var i=0; i < input.length; i++) {
      if (i != 0 && (input.length - i) % 3 == 0) output += separator;
      output += input.charAt(i);
    }
    return output;
  }

function OpenWindow(page,width,height) {
	OpenWin = this.open(page, "", "width=" + width + ",height=" + height + ",status=no,toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=yes");
}

function openModalWindow(url, name, width, height) {
    $("#ModalBackground").css("visibility", "visible");

    var dTop = getWindowDimension("ht") / 2 - height / 2;
    var dLeft = getWindowDimension("wd") / 2 - width / 2;
    
    if (window.showModalDialog) {
        window.showModalDialog(url, name, "dialogWidth:" + width + "px;dialogHeight:" + height + "px" + ";dialogTop:" + dTop + "px;dialogLeft:" + dLeft + "px;scrollbars=yes;resizable=no;");
    } else {
        window.open(url, name, 'height=' + height + ',width=' + width + ',toolbar=no,directories=no,status=no,linemenubar=no,scrollbars=no,resizable=no ,modal=yes');
    }
    $("#ModalBackground").css("visibility", "hidden");
}


function getWindowDimension(name) {
    if (name == "ht") {
        if (self.innerHeight) {
            return self.innerHeight;
        }
        else if (document.documentElement && document.documentElement.clientHeight) {
            return document.documentElement.clientHeight;
        }
        else if (document.body) {
            return document.body.clientHeight;
        }
    }
    if (name == "wd") {
        if (self.innerWidth) {
            return self.innerWidth;
        }
        else if (document.documentElement && document.documentElement.clientWidth) {
            return document.documentElement.clientWidth;
        }
        else if (document.body) {
            return document.body.clientWidth;
        }

    }

    if (name == "st") {
        if (self.innerscrollTop) {
            return self.innerscrollTop;
        }
        else if (document.documentElement && document.documentElement.scrollTop) {
            return document.documentElement.scrollTop;
        }
        else if (document.body) {
            return document.body.scrollTop;
        }

    }


    if (name == "sl") {
        if (self.innerscrollLeft) {
            return self.innerscrollLeft;
        }
        else if (document.documentElement && document.documentElement.scrollLeft) {
            return document.documentElement.scrollLeft;
        }
        else if (document.body) {
            return document.body.scrollLeft;
        }

    }

}


function filterProject(mapNumber) {
    $("table .ProjectFilter").css("display","none");
    $("table #" + mapNumber).css("display", "inline");
    $("#ProjectFilterShowAllLink").css("visibility", "visible");
}

function filterProjectShowAll() {
    $("table .ProjectFilter").css("display", "inline");
    $("#ProjectFilterShowAllLink").css("visibility", "hidden");
}

function toggleDivs(classToHide, idToShow) {
    $("." + classToHide).css("display", "none");
    $("#" + idToShow).css("display", "inline");
}


function swapImage(imgId) {
    $("#" + imgId).hover(
        function() {
            this.src = this.src.replace("_off", "_on");
        },
        function() {
            this.src = this.src.replace("_on", "_off");
        }
    );

    }