<SCRIPT LANGUAGE="JavaScript">
function checkKey(e) {
var alt = e.altKey;
var key = e.keyCode;
var type = e.srcElement.type;
ctrl = event.ctrlKey
if ( alt || ((key == 8)&&(type != "text" && type != "textarea" && type != "password")) || (ctrl&&(key == 82)) || (key == 122) ) {
event.keyCode = 0;
event.returnValue = false;
return false;
}
return true;
}
</SCRIPT>
<body onkeydown="return checkKey(event)">
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