// this fixes a bug in jQuery.position in Chrome
jQuery.fn.aPosition = function() 
{
	thisLeft = this.offset().left;
	thisTop = this.offset().top; 
	thisParent = this.parent();
	parentLeft = thisParent.offset().left;
	parentTop = thisParent.offset().top;

	return {
		left: thisLeft-parentLeft, 
		top: thisTop-parentTop
	}
}