Javascript事件热键兼容ie|firefox

<textarea onkeydown="keyHanlder(event)"> 

</textarea> 

<script> 

function keyHanlder(e){ 

if(e.ctrlKey&&e.keyCode==13){ 

alert('"Ctrl+Enter"'); 

if(e.preventDefault)e.preventDefault(); 

else e.returnValue=false; 

} 

} 

</script> 

非IE浏览器调用函数会自动返回参数event，通过它可以获取键盘 

<SCRIPT LANGUAGE="JavaScript"> 

<!-- 

function hotkey(e) 

{ 

//判断浏览器 

var ex = navigator.appName; 

var a = ex=='Microsoft Internet Explorer'? window.event.keyCode : e.which; 

alert(a); 

switch(a){ 

case 83: 

window.open('Myhomepage/search.htm','show') 

break; 

case 70: 

window.open('Myhomepage/favorite.htm','show') 

break; 

} 

}// end hotkey 

document.onkeydown = hotkey; //当onkeydown 事件发生时调用hotkey函数 

//--> 

</SCRIPT>