var supersleight=function(){
    var root=false;
    var applyPositioning=true;
    var shim='x.gif';
    var shim_pattern=/x\.gif$/i;
    var fnLoadPngs=function() { 
        if(root){
            root=document.getElementById(root);
        } else {
            root=document;
        }
        for(var i=root.all.length-1,obj=null;(obj=root.all[i]);i--){
            if(obj.currentStyle.backgroundImage.match(/\.png/i)!==null){bg_fnFixPng(obj);}
            if(obj.tagName=='IMG'&&obj.src.match(/\.png$/i)!==null){el_fnFixPng(obj);}
            if(applyPositioning&&(obj.tagName=='A'||obj.tagName=='INPUT')&&obj.style.position===''){obj.style.position='relative';}
        }
    };
    var bg_fnFixPng=function(obj){
        var mode='scale';
        var bg=obj.currentStyle.backgroundImage;
        var src=bg.substring(5,bg.length-2);
        if(obj.currentStyle.backgroundRepeat=='no-repeat'){mode='crop';}
        obj.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+src+"', sizingMethod='"+mode+"')";
        obj.style.backgroundImage='url('+shim+')';
    };
    var el_fnFixPng=function(img){
        var src=img.src;img.style.width=img.width+"px";
        img.style.height=img.height+"px";
        img.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+src+"', sizingMethod='scale')";
        img.src=shim;
    };
    var addLoadEvent=function(func){
        var oldonload=window.onload;
        if(typeof window.onload!='function'){
            window.onload=func;
        }else{
            window.onload=function(){
                if(oldonload){oldonload();}
                func();
            };
        }
    };
    return{
        init:function(){
            addLoadEvent(fnLoadPngs);
        },
        limitTo:function(el){
            root=el;
        },
        run:function(){
            fnLoadPngs();
        }
    };
}();