JavaScript Determine which key is pressed

Needed to act based on button pressed. So here it is.

function RandomEP(e)
{
   var evtobj=window.event? event : e //distinguish between IE's explicit event object (window.event) and Firefox's implicit.
   var unicode=evtobj.charCode? evtobj.charCode : evtobj.keyCode
   var actualkey=String.fromCharCode(unicode)
   if (actualkey=="d")
   {
	//your code here
   }
}

Then in the body tag you insert onkeypress=”RandomEP()” or whatever your function is called.