jQuery.fn.center = function() {
        // Always return each...
        
        return this.each(function() {
				
                var t = jQuery(this);

                // Set position to other than 'static' so element shrink-wraps and width/height is calculated properly
                //t.css({position: 'fixed'});

                // Why are there no jQuery.fn.outerWidth/Height:s?
                var w = t.width(), 
                        h = t.height(), 
                        lrPadding = parseInt(t.css('paddingLeft'), 10) + parseInt(t.css('paddingRight'), 10), 
                        lrBorder = parseInt(t.css('borderLeftWidth'), 10) + parseInt(t.css('borderRightWidth'), 10), 
                        tbPadding = parseInt(t.css('paddingTop'), 10) + parseInt(t.css('paddingBottom'), 10), 
                        tbBorder = parseInt(t.css('borderTopWidth'), 10) + parseInt(t.css('borderBottomWidth'), 10), 
                        leftMargin = (w + lrPadding + lrBorder) / 2;
                        topMargin = (h + tbPadding + tbBorder) / 2;

				/* Modified 29 July 2008, Ben Liebert: IE6 does not like the 'fixed' position, IE7 requires it, and FF2 doesn't care */
				var browserPos = 'fixed';
				var browser=navigator.appName;
				var version=parseFloat((new RegExp("MSIE ([0-9]{1,}[.0-9]{0,})")).exec(navigator.userAgent)[1])
				if (browser == "Microsoft Internet Explorer" && version < 7){browserPos='absolute';}
                t.css({
                        position: browserPos, 
                        left: '50%', 
                        top: '50%', 
                        marginLeft: '-' +leftMargin +'px', 
                        marginTop: '-' +topMargin +'px'
                });

                // Use this code if you care about IE<7, this requires the dimensions plug-in tho
                // Calculate left and top pos values
                /*
                var leftPos = (jQuery(window).width() - jQuery(this).outerWidth()) / 2 + jQuery(window).scrollLeft(), 
                        topPos = (jQuery(window).height() - jQuery(this).outerHeight()) / 2 + jQuery(window).scrollTop();

                // Make sure element is not out of bounds
                leftPos = (leftPos < 0) ? 0 : leftPos;
                topPos = (topPos < 0) ? 0 : topPos;
                jQuery(this).css({left: leftPos +'px', top: topPos +'px', zIndex: '1000'});
                */
        });
};