// JavaScript Document
function click(e) {
 if (document.all) {
  if (event.button==2||event.button==3) {
   oncontextmenu='return false';
	//alert("警告！！请不要复制图片！！")   	
  }
 }
 if (document.layers) {
  if (e.which == 3) {
   oncontextmenu='return false';

  }
 }
}
if (document.layers) {
 document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;
document.oncontextmenu = new Function("return false;")

var travel=true
var hotkey=17   /* hotkey即为热键的键值,是ASII码,这里99代表c键 */
if (document.layers)
document.captureEvents(Event.KEYDOWN)
function gogo(e)
{ if (document.layers) {
if (e.which==hotkey&&travel){
// alert("是否又想要复制图片？"); 
} }
else if (document.all){
if (event.keyCode==hotkey&&travel){ 
//alert("操作错误.或许是您按错了按键!"); 
}}
}

document.onkeydown=gogo