function HorizontalPositionCache(getElement) {

	var t = this,
		elements = {},
		lefts = {},
		rights = {};
		
	function e(i) {
		return (elements[i] = (elements[i] || getElement(i)));
	}
	
	t.left = function(i) {
		return (lefts[i] = (lefts[i] === undefined ? e(i).position().left : lefts[i]));
	};
	
	t.right = function(i) {
		return (rights[i] = (rights[i] === undefined ? t.left(i) + e(i).width() : rights[i]));
	};
	
	t.clear = function() {
		elements = {};
		lefts = {};
		rights = {};
	};
	
}