拖动的层，可应用课件中视频置于ppt讲稿的效果

< html > < head > < meta  http-equiv ="Content-Language"  content ="zh-cn" > < meta  http-equiv ="Content-Type"  content ="text/html; charset=gb2312" > < title > 新建网页 1 </ title > </ head > < script  language =javascript > var oldX; var oldY; function MouseDown(obj) {     oldX = event.x-tuodong.style.pixelLeft;     oldY = event.y-tuodong.style.pixelTop;     tuodong.setCapture(); //====>这里 }     function MouseUp(obj) {     tuodong.releaseCapture(); //=====这里 }     function MouseMove(obj) {     if(event.button==1)     {     tuodong.style.pixelLeft = (event.x-oldX);     tuodong.style.pixelTop = (event.y-oldY);     } }  </ script > < body > < div  style ="Z-INDEX: 10;position: absolute; width: 100px; height: 100px; z-index: 1; left: 16px; top: 22px; background-color: #008000" onMouseDown ="MouseDown(this);"  onMouseUp ="MouseUp(this);"  onmouseMove ="MouseMove(this);"  id ="tuodong" >      < font  color ="#FFFFFF" > adsfadsfadfasd </ font > </ div > </ body > </ html >

转载于:https://www.cnblogs.com/dragonsun/archive/2007/07/06/808555.html