/*
	Binds a function call to an event.
					
	Code from http://www.accessify.com/features/tutorials/the-perfect-popup/
*/

function addEvent(elm, evType, fn, useCapture){
	if(elm.addEventListener){
		elm.addEventListener(evType, fn, useCapture);
		return true;
	}
	else if (elm.attachEvent){
		var r = elm.attachEvent('on' + evType, fn);
		return r;
	}
	else{
		elm['on' + evType] = fn;
	}
}