//document.writeln("<div id=\"ad\" style=\"position:absolute\"> ");

//document.writeln("<a href=\"http:\/\/www.jdxz.net\" target=\"_blank\"> ");

//document.writeln("<img src=\"http:\/\/www.jdxz.net\/skin_Mesky\/jdxz.gif\" border=\"0\"> ");

//document.writeln("<\/a><\/div> ");

//document.writeln("  <script> ");

//document.writeln("  var x = 50,y = 60 ");

//document.writeln("  var xin = true, yin = true ");

//document.writeln("  var step = 1  ");

//document.writeln("  var delay = 10 ");

//document.writeln("  var obj=document.getElementById(\"ad\")  ");

//document.writeln("  function floatAD() { ");

//document.writeln("     var L=T=0 ");

//document.writeln("     var R= document.body.clientWidth-obj.offsetWidth ");

//document.writeln("     var B = document.body.clientHeight-obj.offsetHeight ");

//document.writeln("     obj.style.left = x + document.body.scrollLeft ");

//document.writeln("     obj.style.top = y + document.body.scrollTop ");

//document.writeln("     x = x + step*(xin?1:-1)   ");

//document.writeln("     if (x < L) { xin = true; x = L}  ");

//document.writeln("     if (x > R){ xin = false; x = R}  ");

//document.writeln("     y = y + step*(yin?1:-1)  ");

//document.writeln("     if (y < T) { yin = true; y = T }  ");

//document.writeln("     if (y > B) { yin = false; y = B }  ");

//document.writeln("  } ");

//document.writeln("  var itl= setInterval(\"floatAD()\", delay)  ");

//document.writeln("obj.onmouseover=function(){clearInterval(itl)}  ");

//document.writeln("obj.onmouseout=function(){itl=setInterval(\"floatAD()\", delay)} ");

//document.writeln("  <\/script>")