禁用右键

function clickIE4() { if (event.button == 2) { return false; } } function clickNS4(e) { if (document.layers || document.getElementById && !document.all) { if (e.which == 2 || e.which == 3) { return false; } } } function OnDeny() { if (event.ctrlKey || event.keyCode == 78 && event.ctrlKey || event.altKey || event.altKey && event.keyCode == 115) { return false; } } if (document.layers) { document.captureEvents(Event.MOUSEDOWN); document.onmousedown = clickNS4; document.onkeydown = OnDeny(); } else if (document.all && !document.getElementById) { document.onmousedown = clickIE4; document.onkeydown = OnDeny(); } document.oncontextmenu = new Function("return false");