var i = 0;

function slideSwitch() {                
    hideDiv = 'div#' + slideshowItems[i];
    $(hideDiv).fadeOut('slow');

    i++;
    if ( i > slideshowItems.length - 1 ) {
        i = 0;
    }
                    
    showDiv = 'div#'  + slideshowItems[i];
    $(showDiv).fadeIn('slow');                           
}


$(document).ready(                
    function() {
        showDiv = 'div#' + slideshowItems[0];
    	$(showDiv).fadeIn('slow');
                            
        $(function() {
            setInterval( "slideSwitch()", 15000 );
        });
    } 
);