function ShowLeftControl() {
    $('#slideshowLeft').css("visibility", "visible");
    $('#slideshowRight').css("visibility", "hidden");
}
function ShowRightControl() {
    $('#slideshowLeft').css("visibility", "hidden");
    $('#slideshowRight').css("visibility", "visible");
}
function BuildSlideShowImages() {
    $('.slideshow').append('<div class="slideshow_img"></div>');

    for (var i=0;i<images.length;i++)
        $('.slideshow_img').append('<img src="' + directory + images[i] + '" />');	
        
    $('.slideshow').append('<img id="slideshowLeft" style="visibility:hidden;" class="ssControls" src="' + directory + 'slider_nav_left.png" />');
    $('.slideshow').append('<img id="slideshowRight" style="visibility:hidden;" class="ssControls" src="' + directory + 'slider_nav_right.png" />');
}

function installSlideShowControls() {
    $('.slideshow').hover(function() {
        $('.ssControls').css("visibility", "visible");
        
        $(".slideshow").mousemove(function(e){
            var mousex = e.pageX;
            var leftEdge = ($('#slideshowLeft').offset().left + 84);
            var rightEdge = $('#slideshowRight').offset().left;
            var leftCalculated = mousex - leftEdge;
            var rightCalculated = rightEdge - mousex;
            
            if(mousex < leftEdge)
                ShowLeftControl();
            else if(mousex > rightEdge)
                ShowRightControl();
            else if(leftCalculated < rightCalculated)
                ShowLeftControl();
            else
                ShowRightControl();
        });
    },
    function(){
        $(".slideshow").unbind('mousemove');
        $('.ssControls').css("visibility", "hidden");
    });
}