$(document).ready(function() {
    var currentItem = 0;
    var selectItem;
    var itemInterval;
    var itemCnt = $("div.slide-item").size();
    if(itemCnt > 1){
        item_interval = setInterval(slideNext,4000);
    }
	$("#prev-slide").click(function (){
        slidePrev();
    });
	$("#next-slide").click(function (){
        slideNext();
    });
    function slideNext(){
        if (currentItem == (itemCnt-1)){
            selectItem = 0;
        }
        else{
            selectItem = (currentItem+1);
        } 
        $("#slide-item-"+currentItem).hide();
        $("#slide-item-"+selectItem).fadeIn("normal");
        currentItem = selectItem;
    }
    function slidePrev(){
        if (currentItem == 0){
            selectItem = (itemCnt-1); 
        }
        else{
            selectItem = (currentItem-1); 
        } 
        $("#slide-item-"+currentItem).hide();
        $("#slide-item-"+selectItem).fadeIn("normal");
        currentItem = selectItem;
    }
});