IE 5 and 6 png transparent using javascript

IE 5 and 6 png transparent using javascript

<script type="text/javascript" src="js/jquery.js"></script>
this.pngfix = function() {
var ie55 = (navigator.appName == "Microsoft Internet Explorer" && parseInt(navigator.appVersion) == 4 && navigator.appVersion.indexOf("MSIE 5.5") != -1);
var ie6 = (navigator.appName == "Microsoft Internet Explorer" && parseInt(navigator.appVersion) == 4 && navigator.appVersion.indexOf("MSIE 6.0") != -1);
if (jQuery.browser.msie && (ie55 || ie6)) { 
 $("*").each(function(){
  var bgIMG = $(this).css('background-image');
  if(bgIMG.indexOf(".png")!=-1){
   var iebg = bgIMG.split('url("')[1].split('")')[0];
   $(this).css('background-image', 'none');
   $(this).get(0).runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + iebg + "',sizingMethod='crop')";
  };
 });
}; 
};
this.init = function() {
 pngfix();
};

$(document).ready(function(){ 
 init();
});