(function($){
$.fn.vCenter = function(options) {
var pos = {
sTop : function() { 
return window.pageYOffset || $.boxModel && document.documentElement.scrollTop || document.body.scrollTop;},
wHeight : function() {
if ( $.browser.opera || ($.browser.safari && parseInt($.browser.version) > 520) ) {
return window.innerHeight - (($(document).height() > window.innerHeight) ? getScrollbarWidth() : 0);
} else if ( $.browser.safari ) {
return window.innerHeight;
} else {
return $.boxModel && document.documentElement.clientHeight || document.body.clientHeight;
}
}
};
return this.each(function(index) {
if (index == 0) {
var $this = $(this);
var elHeight = $this.height();
var meHeight = pos.sTop() + (pos.wHeight() / 2) - (elHeight / 2);
$this.css({
position: 'absolute',
marginTop: '0',
top: meHeight/2
});
}
});
};

})(jQuery);