js在一个可编辑的div光标处插入图片或者文本（兼容ie，火狐等浏览器）

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>在一个可编辑的div光标处插入图片或者文本</title>
</head>

window.onload=function(){

       document.getElementById("contenteditable").onclick=function(){
           Manager.insertImg();

};
}

var Manager = {
            insertHtml:function(html,type){

           var lastMemo=document.getElementById("memo"),lastEditor=document.getElementById("reditor");

type=type||'memo';

var control=type=='memo'?lastMemo:lastEditor;

if(!control)return;

control.focus();

var selection=window.getSelection?window.getSelection():document.selection,

range=selection.createRange?selection.createRange():selection.getRangeAt(0);

//判断浏览器是ie，但不是ie9以上
           var browser = checkBrowser().split(":");
            var IEbrowser = checkBrowser().split(":")[0];
           var IEverson = Number(checkBrowser().split(":")[1]);

           if(IEbrowser=="IE"&&IEverson<9){

range.pasteHTML(html);

}else{

var node=document.createElement('span');

node.innerHTML=html;

range.insertNode(node);

selection.addRange(range);

}

insertImg:function(){
               var img="<img src='http://www.baidu.com/img/bdlogo.gif'/>";
               this.insertHtml(img,'editor');
       }

}

</script>