var width;
var width_t
var width_b
var width_r

var position;
var view_wid;
var num_page;
var curr_page;
var scrollby;
var col;
var min_pos;
var max_pos;
var col_width;
col_width = 229; //product width

document.observe("dom:loaded", function() 
{ 
    try
    {
        width_i = ($('info_con2').scrollHeight - $('info_con2').offsetHeight);
    }
    catch(error)
    {
        width_i = 100
    }
    //if no width set width to 1 to avoid JS error
    if(width_i < 1)
    {
        width_i = 1
    }
    
    slider_i = new Control.Slider('side_i_bar', 'side_i_track', {
        axis: 'vertical',
        range: $R(0, width_i),
        onSlide: function(v) { scrollVertical(v, $('info_con2'), slider_i);  },
        onChange: function(v) { scrollVertical(v, $('info_con2'), slider_i); }
    });

    //if slider not needed hide it, else create it
    if ($('info_con2').scrollHeight <= $('info_con2').offsetHeight) {
        slider_i.setDisabled();
        $('side_i_wrap').hide();
    }
    
    Event.observe('info_con2', 'DOMMouseScroll', wheel_i); // mozilla
    Event.observe('info_con2', 'mousewheel', wheel_i); // IE/Opera
});

//mouse scrolling info
function handle_i(delta) {
	slider_i.setValueBy(-delta);
}

function wheel_i(event){
	var delta = 0;
	if (!event)
		event = window.event;
	if (event.wheelDelta) { // IE Opera
		delta = event.wheelDelta/6;
	} else if (event.detail) { // Mozilla
		delta = -event.detail*2;
	}
	if (delta)
		handle_i(delta);

	if (event.preventDefault)
		event.preventDefault();
	
	event.returnValue = false;
}