// JScript source code
//Array containing all PNG images on the page
var PNGimageArray = new Array();
var isPrinting = false;

//Path to the blank image (1x1 transparent)
var blankSrc = "images/spacer.png";

//Captures print events
window.attachEvent("onbeforeprint", function () { beforePrint(); } );
window.attachEvent("onafterprint", function () { afterPrint(); } );
//Tests if element is a PNG image, and if so fixes it
function addPngImage(element){
//alert(element.id);
  if (/\.png$/i.test(element.src)) {
    fixImage(element);
    element.attachEvent("onpropertychange", function () 
      { propertyChanged(); } );
    PNGimageArray[PNGimageArray.length] = element;
  }
  if (/\.png$/i.test(element.background)) {
    fixBackground(element);
    element.attachEvent("onpropertychange", function () 
      { propertyChanged(); } );
    PNGimageArray[PNGimageArray.length] = element;
  }
  /*if (/\.png$/i.test(element.onmouseover)) {
  alert("here");
    fixmouseover(element);
    element.attachEvent("onpropertychange", function () 
      { propertyChanged(); } );
    PNGimageArray[PNGimageArray.length] = element;
  }
  if (/\.png$/i.test(element.onmouseout)) {
    fixmouseout(element);
    element.attachEvent("onpropertychange", function () 
      { propertyChanged(); } );
    PNGimageArray[PNGimageArray.length] = element;
  }*/
}

//Applies filter and changes source to blank
function fixImage(element) {
  element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + element.src + "')";
  element.src = blankSrc;
}
function fixBackground(element) {
  element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + element.background + "', sizingMethod='scale')";
  element.background = blankSrc;
}
/*function fixmouseover(element) {
  element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + element.onmouseover + "', sizingMethod='scale')";
  element.mouseover = blankSrc;
  alert(element.onmouseover);
}
function fixmouseout(element) {
  element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + element.onmouseout + "', sizingMethod='scale')";
  element.onmouseout = blankSrc;
}*/

//If property "src" is changed fixs image (not 
//if it is changed to blank though)
function propertyChanged() {
  if (isPrinting) return;
  var element = event.srcElement;
  var pName = event.propertyName;
  if (pName != "src") return;
  if (!new RegExp(blankSrc).test(element.src))
    fixImage(element);

}

//Turns image back to original before print (Explorer can't print filters)
function beforePrint() {
  isPrinting = true;
  var element;
  for(var i = 0; i < PNGimageArray.length; i++){
    element = PNGimageArray[i];
    element.src = element.filters[0].src;
    element.background = element.filters[0].background;
    element.runtimeStyle.filter = "";
  }

}

//Fixes image after print
function afterPrint() {
  isPrinting = false;
  var element;
  for(var i = 0; i < PNGimageArray.length; i++){
    element = PNGimageArray[i];
    fixImage(element);

  }
}