var agt=navigator.userAgent.toLowerCase();
    var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));

function correctPNG2() // correctly handle PNG transparency in Win IE 5.5 or higher.
{
var img = event.srcElement
var imgID = (img.id) ? "id='" + img.id + "' " : ""
var imgClass = (img.className) ? "class='" + img.className + "' " : ""
var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
var imgStyle = "display:inline-block;" + img.style.cssText 
var imgAttribs = img.attributes;
for (var j=0; j<imgAttribs.length; j++)
{
var imgAttrib = imgAttribs[j];
if (imgAttrib.nodeName == "align")
{ 
if (imgAttrib.nodeValue == "left") imgStyle = "float:left;" + imgStyle
if (imgAttrib.nodeValue == "right") imgStyle = "float:right;" + imgStyle
break
}
}
var strNewHTML = "<span " + imgID + imgClass + imgTitle
strNewHTML += " style=\" cursor:hand; " + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
if (is_ie) {
strNewHTML += "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
strNewHTML += "(src='" + img.src + "', sizingMethod='scale');"
}
strNewHTML +="\""
strNewHTML += " onmouseover=\"PNGswap2('" + img.id + "','_normal.','_hover.');\" onmouseout=\"PNGswap2('" + img.id +"','_normal.','_hover.');\""
strNewHTML += " onmousedown=\"PNGswap2('" + img.id + "','_hover.','_down.');\" onmouseup=\"PNGswap2('" + img.id +"','_hover.','_down.');\""
strNewHTML += "></span>" 
img.outerHTML = strNewHTML
} 



function correctPNG3() // correctly handle PNG transparency in Win IE 5.5 or higher.
{
var img = event.srcElement
var imgID = (img.id) ? "id='" + img.id + "' " : ""
var imgClass = (img.className) ? "class='" + img.className + "' " : ""
var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
var imgStyle = "display:inline-block;" + img.style.cssText 
var imgAttribs = img.attributes;
for (var j=0; j<imgAttribs.length; j++)
{
var imgAttrib = imgAttribs[j];
if (imgAttrib.nodeName == "align")
{ 
if (imgAttrib.nodeValue == "left") imgStyle = "float:left;" + imgStyle
if (imgAttrib.nodeValue == "right") imgStyle = "float:right;" + imgStyle
break
}
}
var strNewHTML = "<span " + imgID + imgClass + imgTitle
strNewHTML += " style=\" cursor:hand; " + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
strNewHTML += "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
strNewHTML += "(src='" + img.src + "', sizingMethod='scale');\""
strNewHTML += "></span>" 
img.outerHTML = strNewHTML
} 








function PNGswap2(myID,strState1,strState2)
{
var oSpan = document.getElementById(myID)
var currentAlphaImg = oSpan.filters(0).src 
if (currentAlphaImg.indexOf(strState2) != -1)
oSpan.filters(0).src = currentAlphaImg.replace(strState2,strState1)
else
oSpan.filters(0).src = currentAlphaImg.replace(strState1,strState2)
}