function dom_init() {
	
	(function($){
	 $.fn.extend({
	  center: function (options) {
	       var options =  $.extend({ // Default values
	            inside:window, // element, center into window
	            transition: 0, // millisecond, transition time
	            minX:0, // pixel, minimum left element value
	            minY:0, // pixel, minimum top element value
	            withScrolling:true, // booleen, take care of the scrollbar (scrollTop)
	            vertical:true, // booleen, center vertical
	            horizontal:true // booleen, center horizontal
	       }, options);
	       return this.each(function() {
	            var props = {position:'absolute'};
	            if (options.vertical) {
	                 var top = ($(options.inside).height() - $(this).outerHeight()) / 2;
	                 if (options.withScrolling) top += $(options.inside).scrollTop() || 0;
	                 top = (top > options.minY ? top : options.minY);
	                 $.extend(props, {top: top+'px'});
	            }
	            if (options.horizontal) {
	                  var left = ($(options.inside).width() - $(this).outerWidth()) / 2;
	                  if (options.withScrolling) left += $(options.inside).scrollLeft() || 0;
	                  left = (left > options.minX ? left : options.minX);
	                  $.extend(props, {left: left+'px'});
	            }
	            if (options.transition > 0) $(this).animate(props, options.transition);
	            else $(this).css(props);
	            return $(this);
	       });
	  }
	 });
	})(jQuery);
	

	jQuery('#wrapper').center();
	jQuery(window).bind('resize', function() {
	    jQuery('#wrapper').center({transition:0});
	});
};