<img  id="jp" src="../../../images/common/img/jt.png" onclick="catchScreen()"/>'


function catchScreen(){
    
    PrintScreen.BeginCatchScreen();
}

var PrintScreen = {
        BeginCatchScreen:function(){
            try{
                var catchScreen = document.getElementById("CatchScreen");
                if(catchScreen.getVersion()<1002){
                    Ext.Msg.alert("消息","第一次使用截图工具,请先下载安装控件!谢谢!",function(val){
                        if(val=="ok"){
                            var isWnd = window.open("down.html","activex","");
                            isWnd.moveTo(0,0);
                            isWnd.focus();
                        }
                    });
                    return;
                } 
                //alert(serverName+serverPort+basepath);
                catchScreen.BeginCatchScreen(serverName,serverPort,basepath+"/fileUploadAction.do?functionType=catchscreen",1);
            }catch(e){
                Ext.Msg.alert("消息","第一次使用截图工具,请先下载安装控件!谢谢!",function(val){
                    if(val=="ok"){
                        var isWnd = window.open("down.html","activex","");
                        isWnd.moveTo(0,0);
                        isWnd.focus();
                    }
                });
            }
            
        },
        showPrintScreen:function(){
            var catchScreen = Ext.getDom("CatchScreen");
            var filepath = catchScreen.GetFileName();
            //alert(filepath);
            var inputMsg =document.getElementById("message");
            var img = '<img width="210px" height="150px" ondblclick="screenDblclick(\''+filepath+'\')" src="../../../'+filepath+'"  alt="screenimg">';
            //只发送一张截图
        //    var inputMsgHtml = inputMsg.innerHTML;
            MsgNode.msg = filepath;
            inputMsg.innerHTML = img;
        },
        filterContent:function(content){
            var newContent = content;
            if(newContent.indexOf("screenimg")!=-1){
                filepath = newContent.split("=")[1];
                newContent = '<img class=\"catchScreenImg\" ondblclick="screenDblclick(\''+filepath+'\')" src="../'+filepath+'"  alt="screenimg">';
            }
            for(var p in emotions){
                while(newContent.indexOf('[#'+emotions[p].EMOCODE+']')!=-1){        
                    newContent = newContent.replace('[#'+emotions[p].EMOCODE+']','<img src="images/emotion/'+emotions[p].SRC+'" />');
                }
            }
            return newContent;
        }
}

很奇怪的一个问题，从代码中可以看出，是单击《img》标签的时候，触发截图方法，打断点aler也是这样走的，但是实际情况却是：单击没有反应，只有双击才能触发截图方法，感觉很奇怪