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function document.onkeydown()
{
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   (window.event.keyCode==39))) //ÆÁ±Î Alt+ ·½Ïò¼ü →
   {
    alert("²»×¼ÄãʹÓÃALT+·½Ïò¼üǰ½ø»òºóÍËÍøÒ³£¡");
    event.returnValue=false;
   }
    /* ×¢£ºÕ⻹²»ÊÇÕæÕýµØÆÁ±Î Alt+ ·½Ïò¼ü£¬
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   (event.ctrlKey && event.keyCode==82)){ //Ctrl + R
    event.keyCode=0;
    event.returnValue=false;
    }
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Javascript: setTimeout()ʹÓü° setInterval()ʹÓÃ

Evaluates an expression after a specified number of milliseconds has elapsed.
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2006 Äê 10 ÔÂ 30 ÈÕ
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