<!--
var ns4=0;
var ie4=0;
var ComposeKey='';

function browser()
{
    var name=navigator.appName;
    var ver=navigator.appVersion;
	var codeName=navigator.appCodeName;
	var userAgent=navigator.userAgent;
    if (ver.substring(0,1)>="4")
    {
    if(name=='Netscape')
    {
        //window.alert("你用的浏览器是：Netscape 版本："+ver);
        //document.write("Netscape"+ver);
		ns4 = 1;
        document.close();
        return(0);
    }   
    if(name=='Microsoft Internet Explorer')
    {
        //window.alert("你用的浏览器是："+ codeName+ "IE 版本："+ ver + "name:" + name);
		//document.writeln("IE"+ver+"userAgent="+userAgent);
		ie4 = 1;
        return(0);
    }    
    else
    {
		document.writeln("请使用IE或NETSCAPE 4.0版本以上浏览器。");
        window.alert("浏览器:"+name+"版本:"+ver);
        return(0);
    }
	}
    else
    {
	    document.writeln("浏览器版本不够4.0以上!!");
        window.alert("该浏览器版本小于4.0");
        return(0);
    }    
}        

function click() {
if (event.button==2) {
		return false;
	}
if (event.button==1) {
	return;
	}

if (event.button==3) {
	return false;
	}
if(window.confirm("是否打印当前文本？")){
	window.print();
	window.event.returnValue=false;
}else{
	window.event.returnValue=false;
}
//document.write(event.button);

//if (event.button==1) {
//	alert('鼠标左键位置：x='+window.event.x+',y='+window.event.y)
//	}

}
document.onmousedown=click;
document.onmouseup=click;
document.onmouseclick=click;

function keyDown(e) { 
	if (ns4) { 
		var nKey=e.which; 
		var ieKey=0
		ComposeKey += nKey;
	} 
	if (ie4) { 
		var ieKey=event.keyCode; 
		var nKey=0 
		ComposeKey += ieKey;
	}
	if(ComposeKey != '')
	{
		//alert("nKey:"+nKey+" ieKey:" + ieKey + " ComposeKey:" +ComposeKey) 
		if(ComposeKey.indexOf("1765")!=-1 || ComposeKey.indexOf("1767")!=-1)
		{
			alert('拷贝禁止!');
			ComposeKey = "";
		}
	}
} 
document.onkeydown = keyDown 
if (ns4) document.captureEvents(Event.KEYDOWN) 

 

document.oncontextmenu =click;




-->