Math.easeIn = function (r, p, f){
	if (p == undefined) p = 2;
	if (f == undefined) f = Math.pow;
	return f (r, p);
}
Math.easeOut = function(r, p, f){
		return 1-Math.easeIn(1-r, p, f);
}
Math.easeInOut = function (r, p, f){
		if(r<.5)return Math.easeIn(2*r, p, f)/2;
		return Math.easeOut(2*(r-.5), p, f)/2+.5;
}
Math.ezExpo = function (r, p) {
		if(r==0 || r==1) return r;
		if(p<2)p = 2;
		return Math.pow(p, 10*(r-1));
}
Math.ezCirc = function (r, p) {
		r = -(Math.sqrt(1-r*r)-1);
		if(p>1) return Math.easeIn(r, --p, Math.ezCirc);
		return r;
}
Math.ezSine = function (r, p){
		r = 1-Math.cos(r*Math.PI/2);
		if(p>1) return Math.easeIn(r, --p, Math.ezSine);
		return r;
}

function getWinSize() {
  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 ];
  window.alert( 'Width = ' + myWidth );
  window.alert( 'Height = ' + myHeight );
}

function getScrollXY() {
  var scrOfX = 0, scrOfY = 0;
  if( typeof( window.pageYOffset ) == 'number' ) {
    //Netscape compliant
    scrOfY = window.pageYOffset;
    scrOfX = window.pageXOffset;
  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
    //DOM compliant
    scrOfY = document.body.scrollTop;
    scrOfX = document.body.scrollLeft;
  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
    //IE6 standards compliant mode
    scrOfY = document.documentElement.scrollTop;
    scrOfX = document.documentElement.scrollLeft;
  }
  return [ scrOfX, scrOfY ];
}