拖动层效果，兼容IE和FF!第1/2页

                if (window.opera){ document.write("<input type='hidden' id='Q' value=' '>"); }

                var n = 500;
                var dragok = false;
                var y,x,d,dy,dx;

                function move(e)
                {
                    if (!e) e = window.event;
                    if (dragok){
                        d.style.left = dx + e.clientX - x + "px";
                        d.style.top  = dy + e.clientY - y + "px";
                        return false;
                    }
                }

                function down(e)
                {
                    if (!e) e = window.event;
                    var temp = (typeof e.target != "undefined")?e.target:e.srcElement;
                    if (temp.tagName != "HTML"|"BODY" && temp.className != "dragclass"){
                        temp = (typeof temp.parentNode != "undefined")?temp.parentNode:temp.parentElement;