// JavaScript Document
<!-- 

//改变字休大小
function doZoom(size){
 document.getElementById('zoom').style.fontSize=size+'px'
}
// -->
	
//全选与反选
function checkall(form,choose){
var i;
for(i=0;i<form.elements.length;i++){
  var e=form.elements[i];
       e.checked=true;
 }
 choose.innerHTML="<a href='javascript:checkallf(form1,allchoose)'>反选</a>";
}

function checkallf(form,choose){
var i;
for(i=0;i<form.elements.length;i++){
  var e=form.elements[i];
       e.checked=false;
 }
  choose.innerHTML="<a href='javascript:checkall(form1,allchoose)'>全选</a>";
}

//图片压缩
var imageObject;
function ResizeImage(obj, MaxW, MaxH){
if (obj != null){
  imageObject = obj;
 }
  
var state=imageObject.readyState;
if(state!='complete') {
	
    setTimeout("ResizeImage(null,"+MaxW+","+MaxH+")",50);
   return;
 }
 var oldImage = new Image();
 oldImage.src = imageObject.src;
 var dW=oldImage.width; 
 var dH=oldImage.height;
 if(dW>MaxW || dH>MaxH) {
  a=dW/MaxW; 
  b=dH/MaxH;
  if(b>a){ 
    a=b;
  }	  
    dW=dW/a; 
	dH=dH/a;	
 }

 if(dW > 0 && dH > 0) {
    imageObject.width=dW;
    imageObject.height=dH;
  }
}



function checkdel(){
	//檢測是否有選擇多选框的至少一项
 T=0
 var obj = document.getElementsByName("delid");
   for (i = 0;i< obj.length;i++){
     if (obj [i].checked==true){
	     T=1;
		 break;
		}	 
   }
   
 
if(T==1&&window.confirm('确定要删除所选数据吗！')){
	return true;
	}
else{
	 return false;
 }

}

<!-- 动态检测文本框输入Begin
maxLen = 200; // max number of characters allowed
function checkMaxInput(form) 
{
if (form.content.value.length > maxLen) // if too long.... trim it!
  {
    form.content.value = form.content.value.substring(0, maxLen);
  }
   // otherwise, update 'characters left' counter
else 
  form.conterchar.value = "发表评论:" + (maxLen - form.content.value.length);
}
//  End -->


//读取文件名
function GetFileName(obj)
{

var LastGen = obj.lastIndexOf("\\"); //记取最后一个\的位置 如：D:\AAAA\职业大舞台-宣传片.mpg
var FNameEx=(obj.substr(LastGen+1));//从最后一个根号开始读取文件名 如：职业大舞台-宣传片.mpg
var Exlength=FNameEx.split(".")
  return Exlength[0];
}