function preloadImgs() {
 var d=document,a=arguments;
 if(!d.imgs) d.imgs=new Array();
 for(var i=0; i<a.length; i++) 
 	{
 		d.imgs[i]=new Image; d.imgs[i].src=a[i];
 	}
}

function setBackgroundImage (elementID, imgURL) {
  if (document.all)
    document.all[elementID].style.backgroundImage = 'url(' + imgURL + ')';
  else if (document.getElementById)
    document.getElementById(elementID).style.backgroundImage = 'url(' + imgURL + ')';
}

var isNN = (navigator.appName.indexOf("Netscape")!=-1);

function autoTab(input,len, e) {
var keyCode = (isNN) ? e.which : e.keyCode; 
var filter = (isNN) ? [0,8,9] : [0,8,9,16,17,18,37,38,39,40,46];
if(input.value.length >= len && !containsElement(filter,keyCode)) {
input.value = input.value.slice(0, len);
input.form[(getIndex(input)+1) % input.form.length].focus();
}
function containsElement(arr, ele) {
var found = false, index = 0;
while(!found && index < arr.length)
if(arr[index] == ele)
found = true;
else
index++;
return found;
}
function getIndex(input) {
var index = -1, i = 0, found = false;
while (i < input.form.length && index == -1)
if (input.form[i] == input)index = i;
else i++;
return index;
}
return true;
}

function Trim(textbox) {
    textbox.value = textbox.value.replace(/^\s+|\s+$/g, '');
}
function returnFocus() {
    var el = last_element;
    if (el != null) {
        el.focus();
        return true;
    }
}
function setMsg() {
    var msg = $get(arguments[0]);
    if (msg != null) {
        msg.innerHTML = arguments[1];
        return true;
    }
}
function toggleDisplay() {
    var el = $get(arguments[0]);
    if (el == null) {
        return true;
    }
    if (el.style.display == 'none') {
        el.style.display = 'block';
    } else {
        el.style.display = 'none';
    }
    return true;
}
function setStatus() {
    window.status = arguments[0];
    return true;
}
function disableList() {
  for (var i = 0; i < arguments.length + 0; i++) {
    window.setTimeout("document.getElementById('" + arguments[i] + "').disabled=true;", 0);
  }
}
function disableListAfterValidate() {
  var v = Page_ClientValidate(arguments[0]);
  if (v == true) {
    var el;
    for (var i = 1; i < arguments.length + 0; i++) {
      el = document.getElementById(arguments[0]);
      if (el != null) {
        el.disabled = true;
      }
    }
  }
}
var last_element;
function checkPaymentAmount() {
    var v = Page_ClientValidate(arguments[0]);
    last_element = arguments[1];
    var pa = (last_element.value * 1) + 0;
    var pm = (arguments[2] * 1) + 0;
    if (v && pa < pm) {
        var modalPopupBehavior = $find('mpeUnderPaymentCheckModalPopupBehavior');
        modalPopupBehavior.show();
    }
}

function checkLuhn(src, args) {
    var card_num = document.getElementById(src.controltovalidate).value;
    var card_len = card_num.length;
    var oddoeven = card_len & 1;
    var sum = 0;
    for (var count = 0; count < card_len; count++) {
        var digit = parseInt(card_num.charAt(count));
        if (!((count & 1) ^ oddoeven)) {
            digit *= 2;
            if (digit > 9) {
                digit -= 9;
            }
        }
        sum += digit;
    }
    if (sum % 10 == 0) {
        args.IsValid = true;
    } else {
        args.IsValid = false;
    }
}

function hidePanel(el) {
    var errPanel = document.getElementById(el);
    if (errPanel != null) {
        var errStyle = errPanel.style.display;
        if (errStyle != null) {
            if (errStyle != 'none') {
                errPanel.style.display = 'none';
            }
        }
    }
}