$.fn.centerInClient = function(options) {
	var opt = { forceAbsolute: false,
        container: window,    // selector of element to center in
        completeHandler: null,
        minX: 0,
        minY: 0
    };
    $.extend(opt, options);
   
    return this.each(function(i) {
        var el = $(this);
        var jWin = $(opt.container);
        var isWin = opt.container == window;
		var scrollTop = jWin.scrollTop();
        // force to the top of document to ENSURE that 
        // document absolute positioning is available
        if (opt.forceAbsolute) {
            if (isWin)
                el.appendTo("body");
            else
                el.appendTo(jWin.get(0));
        }
        // have to make absolute
        el.css("position", "absolute");
		// height is off a bit so fudge it
        var heightFudge = isWin ? 2.0 : 1.8;
        var x = (isWin ? jWin.width() : jWin.outerWidth()) / 2 - el.outerWidth() / 2;
        var y = (isWin ? jWin.height() : jWin.outerHeight()) / heightFudge - el.outerHeight() / 2;
        el.css("left", x < opt.minX ? opt.minX + jWin.scrollLeft() : x + jWin.scrollLeft());
        el.css("top", y < opt.minY ? opt.minY + scrollTop : y + scrollTop);
        // if specified make callback and pass element
        if (opt.completeHandler)
            opt.completeHandler(this);
    });
}