function getWindowSize() {
	var myWidth = 0, myHeight = 0;
	if( typeof( window.innerWidth ) == 'number' ) {
		//Non-IE
		myWidth = window.innerWidth;
		myHeight = window.innerHeight;
	} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		//IE 6+ in 'standards compliant mode'
		myWidth = document.documentElement.clientWidth;
		myHeight = document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		//IE 4 compatible
		myWidth = document.body.clientWidth;
		myHeight = document.body.clientHeight;
	}
	return [ myWidth, myHeight ];
}

function addEvent(no, ev, f){
	if (no.addEventListener)
		no.addEventListener(ev, f, true);
	else
		no.attachEvent('on'+ev, f);
}

function remEvent(no, ev, f){
	if (no.removeEventListener)
		no.removeEventListener(ev, f, true);
	else
		no.detachEvent('on'+ev, f);
}