var IE = document.all;
var NS = document.layers;
function MM_preloadImages() {
    if (document.images) {
        var imgFiles = MM_preloadImages.arguments;
        if (document.preloadArray == null) {
            document.preloadArray = new Array();
        }
        var i = document.preloadArray.length;
        with (document) {
            for (var j = 0; j < imgFiles.length; j++) {
                if (imgFiles[j].charAt(0) != "#") {
                    document.preloadArray[i] = new Image();
                    document.preloadArray[i++].src = imgFiles[j];
                }
            }
        }
    }
}

function MM_swapImage() {
    var i, j = 0, objStr, obj, swapArray = new Array(), oldArray = document.MM_swapImgData;
    for (i = 0; i < (MM_swapImage.arguments.length - 2); i += 3) {
        objStr = MM_swapImage.arguments[(navigator.appName == "Netscape") ? i : i + 1];
        if ((objStr.indexOf("document.layers[") == 0 && document.layers == null) || (objStr.indexOf("document.all[") == 0 && document.all == null)) {
            objStr = "document" + objStr.substring(objStr.lastIndexOf("."), objStr.length);
        }
        obj = eval(objStr);
        if (obj != null) {
            swapArray[j++] = obj;
            swapArray[j++] = (oldArray == null || oldArray[j - 1] != obj) ? obj.src : oldArray[j];
            obj.src = MM_swapImage.arguments[i + 2];
        }
    }
    document.MM_swapImgData = swapArray;
}

function MM_swapImgRestore() {
    if (document.MM_swapImgData != null) {
        for (var i = 0; i < (document.MM_swapImgData.length - 1); i += 2) {
            document.MM_swapImgData[i].src = document.MM_swapImgData[i + 1];
        }
    }
}

function isDate(dateStr) {

    var datePat = /^(\d{1,2})(\/|-)(\d{1,2})(\/|-)(\d{2,4})$/;
    var matchArray = dateStr.match(datePat); // is the format ok?

    if (matchArray == null) {
        // alert("Please enter date as either mm/dd/yyyy or mm-dd-yyyy.");
        return false;
    }

    month = matchArray[1]; // parse date into variables
    day = matchArray[3];
    year = matchArray[5];

    if (year < 1900 && year > 99) { // check year range
        return false;
    }

    if (month < 1 || month > 12) { // check month range
		// alert("Month must be between 1 and 12.");
        return false;
    }

    if (day < 1 || day > 31) {
        // alert("Day must be between 1 and 31.");
        return false;
    }

    if ((month==4 || month==6 || month==9 || month==11) && day==31) {
        // alert("Month "+month+" doesn't have 31 days!")
        return false;
    }

    if (month == 2) { // check for february 29th
        var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
        if (day > 29 || (day==29 && !isleap)) {
            // alert("February " + year + " doesn't have " + day + " days!");
            return false;
        }
    }
    return true; // date is valid
}

function isPositiveNumber(sText)
{
	var ValidChars = "0123456789.";
	var IsNumber=true;
	var ynDecimalUsed=false;
	var Char;
	
	for (i = 0; i < sText.length && IsNumber == true; i++) {
		Char = sText.charAt(i); 
		if (ValidChars.indexOf(Char) == -1) {
			IsNumber = false;
		}
		else {
			if (Char == '.') {
				if (ynDecimalUsed) {
					IsNumber = false;
				}
				else {
					ynDecimalUsed = true;
				}
			}
		}
	}
	return IsNumber;
}
					
function checkDate(oElement) {
	if (oElement.value != "" && !isDate(oElement.value)) {
		alert("'" + oElement.value + "' is not a valid date.");
		//oElement.value = "";
		oElement.value = oElement.defaultValue;
	}
}
					
function checkHours(oElement) {
	if (!isPositiveNumber(oElement.value)) {
		alert("'" + oElement.value + "' is not a valid number of hours.");
		//oElement.value = "0.00";
		oElement.value = oElement.defaultValue;
	} 
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.name; if ((val=val.value)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
  } if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}
function openLC(theURL) {
	window.open(theURL,'liveconcepts','width=410,height=410');
}