JS控制图片拖动 放大 缩小 旋转 支持滚轮放大缩小 IE有效

<html> <head>     <title>图片拖动,放大,缩小,转向</title>

<script type="text/javascript">      /*滚轮事件*/     var scrollFunc=function(e) {         e=e || window.event;         if(e.wheelDelta)         {           if(e.wheelDelta > 0) imgToSize(0);//缩小图片           else imgToSize(1);//放大图片         }         else         {           if(e.detail < 0) imgToSize(1);//放大图片           else imgToSize(0);//缩小图片         }     }     if(document.addEventListener){document.addEventListener('DOMMouseScroll',scrollFunc,false);}     window.onmousewheel=document.onmousewheel=scrollFunc;//IE/Opera/Chrome/Safari

function realSize(){         var oImg = document.all('oImg');          var newImg = new Image();         newImg.src = oImg.src;         oImg.style.height = newImg.height+"px";         oImg.style.width = newImg.width+"px";     }

// 缩放图片     function imgToSize(oBool) {       var oImg = document.all('oImg');       oImg.style.zoom = parseInt(oImg.style.zoom) + (oBool ? 5 : -5) + '%';     }       // 旋转图片      var rotateRight = 1;//右转     var rotateLeft = 3;//左转     function imgRoll(direction) {          var oImg = document.all('oImg');         if(direction == "left") {             oImg.style.filter = 'Progid:DXImageTransform.Microsoft.BasicImage(Rotation='+ rotateLeft +')';             rotateLeft -= 1;              rotateLeft = rotateLeft== 0 ? 4 : rotateLeft ;         }else{             oImg.style.filter = 'Progid:DXImageTransform.Microsoft.BasicImage(Rotation='+ rotateRight +')';             rotateRight += 1;              rotateRight = rotateRight==4 ? 0 : rotateRight ;         }     }       // 翻转图片     function imgReverse(arg) {       var oImg = document.all('oImg');       oImg.style.filter = 'Flip' + arg;               }       // 拖动图片     var oBoolean = false, oLeftSpace = 0, oTopSpace = 0;     function mStart() {        oBoolean = true;        if (oBoolean) {           var oImg = document.all('oImg');           oLeftSpace = window.event.clientX - oImg.style.pixelLeft;           oTopSpace = window.event.clientY - oImg.style.pixelTop;        }     }       function mEnd() {        oBoolean = false;     }       function document.onmousemove() {        if (window.event.button==1 && oBoolean) {           var oImg = document.all('oImg');           oImg.style.pixelLeft = window.event.clientX - oLeftSpace;           oImg.style.pixelTop = window.event.clientY - oTopSpace;           return false;        }     }      </script>

</head> <body>     <table>         <tr>             <td>                 <div style="position: relative; z-index: 1000;">                     <input type="button" value="放大" onclick="imgToSize(1);">                     <input type="button" value="缩小" onclick="imgToSize(0);">                     <input type="button" value="原大小" onclick="realSize();">                     <input type="button" value="左旋转" onclick="imgRoll('left');">                     <input type="button" value="右旋转" onclick="imgRoll('right');">                     <input type="button" value="水平翻转" onclick="imgReverse('H');">                     <input type="button" value="垂直翻转" onclick="imgReverse('V');">                 </div>             </td>         </tr>         <tr>             <td>                 <div align="center">                     <img id="oImg" src="data:images/save.jpg" style="position: relative; zoom: 100%; cursor: move;"                         onmousedown="mStart();" onmouseup="mEnd();">                 </div>             </td>         </tr>     </table> </body> </html>

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