Disable and timeout for mouse gesture

[porman9]

I use the Mouse Gesture Redox addon for Firefox 3.4 which allows javascript to be added for a gesture.
I have found code which will perform different commands for the same gesture when a particular key is pressed. I would like the code to be disabled after each key press or a timeout (if a key is not pressed) until the same gesture is performed again.
My attempts at coding to produce this have not worked.
Can this be achieved?
porman9

document.onkeypress=detectKey; 
function detectKey(e) 
{ 
if(e.which==97){BrowserOpenAddonsMgr();} 
else 
if(e.which==100){gBrowser.loadOneTab(currURL, null, null, null, false, false);document.body.focus();} 
else 
if(e.which==110){mgB_OpenTab();} 
else 
if(e.which==109){mgW_MinWin();} 
else 
if(e.which==114){mgW_Restart();} 
else 
if(e.which==117){mgB_UndoCloseTab();} 
}