function keyUp(e) { 　　       　 var currKey=0,e=e||event;　　      　   currKey=e.keyCode||e.which||e.charCode;　　      　　var keyName = String.fromCharCode(currKey);　　       　 alert("按键码: " + currKey + " 字符: " + keyName); 　　       }　　       document.onkeyup = keyUp;
 
 
 function text(event){   var browser;      if (document.all)           browser = "IE";       else           browser = "FF";      if(browser == "IE"){           key = event.keyCode;       }else{            key=event.which;      }   alert(key);   }