disable ctrl+s

[lavanya r]

The below code is to disable the ctrl+s functionality and triger to user defined function when we press ctrl+s...It is working fine in IE. In mozilla also its working fine but the problem here is, letter "S" is diabled when i want to add any word which is including "S" is not posiible in mozilla.

can any one please help on this.

document.onkeydown = disablekey;
document.onhelp=processHelp;
function disablekey(evtArg)
{
    var isIE = ( document.all ? true : false) ;
    var KeyID=( document.all ? window.event.keyCode : evtArg.which) ;
    var ctrlPressed =( document.all ? window.event.ctrlKey: evtArg.which);
    if ( ctrlPressed && KeyID == 83 )
    {
        if( isIE )
        {
            handleKey(evtArg);
            event.keyCode = 0;
            return false;
        }
        else
        {
            handleKey(evtArg);
            evtArg.preventDefault();
            evtArg.stopPropagation();
        }
    }
    else
    {
        handleKey(evtArg);
    }
 
}
function handleKey(evtArg)
{    
    var evt = ( document.all ? window.event : evtArg) ;
    var isIE = ( document.all ? true : false) ;
    var KeyID=( document.all ? window.event.keyCode : evtArg.which) ;
    var skip=false;
    ctrlPressed = evt.ctrlKey; 
    //var ctrlPressed =( document.all ? window.event.ctrlKey: evtArg.which);
    if( ctrlPressed && KeyID == 83 )
    {    
 
        if(document.MAINFORM.activity.value=="CREATE_ORDER_CONFIRMATION")
        {
        completeCreateOrderConfirmation();
 
            if(!skip)
            {
 
            if ( isIE )
            {
                event.keyCode = 0;
                event.returnValue = false;
                return false;
 
            }
            else
            {
                evt.preventDefault();
                evt.stopPropagation();
            }
            } 
    }
}
function processHelp()
{
    return false;
}

[Dormilich]

how do you know that the control key has been pressed in Mozilla?