/*
 * 
 * Center Plugin 1.0 - Easy cross-browser centering a div!
 * Version 1.0.1
 * @requires jQuery v1.3.0
 * 
 * Copyright (c) 2010 Matthias Isler
 * Licensed under the GPL licenses:
 * http://www.gnu.org/licenses/gpl.html
 * 
 */
jQuery.fn.center = function(init) {
		
	var object = this;
		
	if(!init) {

	object.css("position","absolute");
/*	if (($(window).height() - this.height() ) / 2+$(window).scrollTop() < 0) {
    	object.css("top",  0 + "px");
	}else{ 
    	object.css("top", ( $(window).height() - this.height() ) / 2+$(window).scrollTop() + "px");
	
	}
	object.css("left", ( $(window).width() - this.width() ) / 2+$(window).scrollLeft() + "px");

return this;
*/	

if ($(window).height() / 2 - this.innerHeight() / 2 < 0) {
    	object.css("margin-top",  0 + "px");
	}else{ 
    	object.css("margin-top",  $(window).height() / 2 - this.innerHeight() / 2 + "px");
	
	}
		object.css('margin-left', $(window).width() / 2 - this.outerWidth() / 2);
		
		$(window).resize(function() {
			object.center(!init);
		});
		
	} else {
			
		var marginTop = $(window).height() / 2 - this.innerHeight() / 2;
		var marginLeft = $(window).width() / 2 - this.outerWidth() / 2;
			
		marginTop = (marginTop < 0) ? 0 : marginTop;
		marginLeft = (marginLeft < 0) ? 0 : marginLeft;

		object.stop();
		object.animate(
			{
				marginTop: marginTop, 
				marginLeft: marginLeft
			}, 
			0, 
			'linear'
		);
		
	}
}