$(document).ready(function() {  
  
        //options( 1 - ON , 0 - OFF)  
        var auto_slide = 0;  
            var hover_pause = 0;  
        var key_slide = 0;  
  
        //speed of auto slide(  
        var auto_slide_seconds = 5000;  
        /* IMPORTANT: i know the variable is called ...seconds but it's 
        in milliseconds ( multiplied with 1000) '*/  
  
        /*move the last list item before the first item. The purpose of this is 
        if the user clicks to slide left he will be able to see the last item.*/  
        $('#carousel_ul li:first').before($('#carousel_ul li:last'));  
  
        //check if auto sliding is enabled  
        if(auto_slide == 1){  
            /*set the interval (loop) to call function slide with option 'right' 
            and set the interval time to the variable we declared previously */  
            var timer = setInterval('slide("right")', auto_slide_seconds);  
  
            /*and change the value of our hidden field that hold info about 
            the interval, setting it to the number of milliseconds we declared previously*/  
            $('#hidden_auto_slide_seconds').val(auto_slide_seconds);  
        }  
  
        //check if hover pause is enabled  
        if(hover_pause == 1){  
            //when hovered over the list  
            $('#carousel_ul').hover(function(){  
                //stop the interval  
                clearInterval(timer)  
            },function(){  
                //and when mouseout start it again  
                timer = setInterval('slide("right")', auto_slide_seconds);  
            });  
  
        }  
  
        //check if key sliding is enabled  
        if(key_slide == 1){  
  
            //binding keypress function  
            $(document).bind('keypress', function(e) {  
                //keyCode for left arrow is 37 and for right it's 39 '  
                if(e.keyCode==37){  
                        //initialize the slide to left function  
                        slide('left');  
                }else if(e.keyCode==39){  
                        //initialize the slide to right function  
                        slide('right');  
                }  
            });  
  
        }  
  
  });  
  
//FUNCTIONS BELLOW  
  
//slide function  
function slide(where){  
  
            //get the item width  
            var item_width = $('#carousel_ul li').outerWidth() + 10;  
  
            /* using a if statement and the where variable check 
            we will check where the user wants to slide (left or right)*/  
            if(where == 'left'){  
                //...calculating the new left indent of the unordered list (ul) for left sliding  
                var left_indent = parseInt($('#carousel_ul').css('left')) + item_width;  
            }else{  
                //...calculating the new left indent of the unordered list (ul) for right sliding  
                var left_indent = parseInt($('#carousel_ul').css('left')) - item_width;  
  
            }  
  
            //make the sliding effect using jQuery's animate function... '  
            $('#carousel_ul:not(:animated)').animate({'left' : left_indent},500,function(){  
  
                /* when the animation finishes use the if statement again, and make an ilussion 
                of infinity by changing place of last or first item*/  
                if(where == 'left'){  
                    //...and if it slided to left we put the last item before the first item  
                    $('#carousel_ul li:first').before($('#carousel_ul li:last'));  
                }else{  
                    //...and if it slided to right we put the first item after the last item  
                    $('#carousel_ul li:last').after($('#carousel_ul li:first'));  
                }  
  
                //...and then just get back the default left indent  
                $('#carousel_ul').css({'left' : '-72px'});  
            });  
  
}