1 // ScriptingMagic PNG hack for IE

     2 // Source: http://www.scriptingmagic.com/Topics/IE%20Specific/PNG%20Transparency/

     3 

     4 if ( typeof ScriptingMagic == "undefined" )

     5 {

     6   var ScriptingMagic = {}

     7 }

     8 ScriptingMagic.fixPNG = function() {};

     9 var smFixPNGOnload = (

    10   function()

    11   {

    12     if ( !document.all || window.opera )

    13     {

    14       return;

    15     }

    16     var a = parseFloat(navigator.appVersion.match(/MSIE (\d.*)/)[1]);

    17     if ( ( a < 5.5 ) || ( a >= 7 ) )

    18     {

    19       return;

    20     }

    21     if ( document.styleSheets.length == 0 )

    22     {

    23       document.body.appendChild(document.createElement("style"));

    24     }

    25     var src_clause = 'src=\'"+this.nextSibling.src.replace(/\'/g,"%27")+"\')"';

    26     document.styleSheets[document.styleSheets.length-1].addRule(".sm-iepng-backdrop", 'position: absolute; z-index: expression(this.nextSibling.currentStyle.zIndex); top: expression(this.nextSibling.offsetTop); left: expression(this.nextSibling.offsetLeft); height: expression(this.nextSibling.offsetHeight); width: expression(this.nextSibling.offsetWidth); filter: expression("progid:DXImageTransform.Microsoft.AlphaImageLoader(' + src_clause + ');');

    27     window.ScriptingMagic.fixPNG = function(b)

    28     {

    29       b.style.filter="alpha(opacity=0)";

    30       var c = document.createElement("div");

    31       c.className = "sm-iepng-backdrop";

    32       if ( b.currentStyle.position.match(/^static$/i) )

    33       {

    34         b.style.position = "relative";

    35       }

    36       b.parentNode.insertBefore(c,b);

    37       c = null

    38     };

    39     var b = [], c, d, e, f;

    40     var g = document.getElementsByTagName("img");

    41     for ( c = 0, d = g.length; c < d; c++ )

    42     {

    43       b[b.length] = g[c];

    44     }

    45     var h = document.getElementsByTagName("input");

    46     for ( c = 0, d = h.length; c < d; c++ )

    47     {

    48       e = h[c];

    49       if ( e.type && e.type.match(/^image$/i) )

    50       {

    51         b[b.length] = e;

    52       }

    53     }

    54     for ( c = 0, d = b.length; c < d; c++ )

    55     {

    56       e = b[c];

    57       window.ScriptingMagic.fixPNG(e);

    58     }

    59     a = b = c = d = e = f = g = h = null;

    60   }

    61 );

    62 

    63 addOnloadHook(smFixPNGOnload);

    64 

    65 ScriptingMagic.fixPNG.version = 1.4;

    66 ScriptingMagic.fixPNG.release = new Date("Jan 1, 2007");

    67