$(document).ready(function()
{

});
jQuery.fn.yoyo = function(attr,o){
        o = jQuery.extend({},{ range:20, speed:50, easing: 'linear' },o);
        var r = { hover:{ attr: o.range }, out:{} };
        r['hover'][attr] = '+='+ o.range;
        r['out'][attr] = '-='+ o.range;
        jQuery(this).hover(function() { //mouse in
            jQuery(this).animate(r.hover, o.speed, o.easing);
			
			
			
			
        }, function() { //mouse out
            jQuery(this).animate(r.out, o.speed, o.easing);
        });
    }