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if(flag){
var img= new Image();
if(names[0].value!=""){
img.src=names[0].value;
alert(img.width);//µ¯³öͼƬ¿í¶È
if(img.width>990||img.width<850){
alert("ÉÏ´«Í¼Æ¬¿í±ØÐëΪ850pxµ½990pxÖ®¼ä!");
return false;
}else if(img.height<300||img.height>350) {
alert("ÉÏ´«Í¼Æ¬¸ß±ØÐëΪ300pxµ½350pxÖ®¼ä!");
return false;
}else {
return true;
}
}
return false;
}else{
alert('ÇëÑ¡ÔñÄãÒªÉÏ´«µÄÏàÆ¬!');
}


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  <script language="javascript">
  var ImgObj= new Image();
  var FileObj;
  function checkImg(){
var imgSrc = document.frm1.img1.value;
//alert(imgSrc);
ImgObj.src=imgSrc;
CheckProperty(ImgObj);


  }

  function CheckProperty(obj) //¼ì²âͼÏñÊôÐÔ
{


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