// JavaScript Document

(function(jq) {  
    jq.autoScroll = function(ops) {  
        ops = ops || {};  
        ops.styleClass = ops.styleClass || 'scroll-to-top-button';  
        var t = jq('<div class="'+ops.styleClass+'"></div>'),  
            d = jq(ops.target || document);  
        jq(ops.container || 'body').append(t);  
  
        t.css({  
            opacity: 0,  
            position: 'absolute',  
            top: 0,  
            right: 0  
        }).click(function() {  
            jq('html,body').animate({  
                scrollTop: 0  
            }, ops.scrollDuration || 1000);  
        });  
  
        $(window).scroll(function(){  
            var sv = d.scrollTop();  
            if (sv < 10) {  
                t.clearQueue().fadeOut(ops.hideDuration || 200);  
                return;  
            }  
  
            t.css('display', '').clearQueue().animate({  
                top: sv,  
                opacity: 0.8  
            }, ops.showDuration || 500);  
        });  
    };  
})(jQuery);

$(document).ready(function(){
	$.autoScroll({
		scrollDuration: 2000,
		showDuration: 600,
		hideDuration: 300
	});  
});