var sliderPrevButton;
var sliderNextButton;
var sliderFrames;

var scrollslider;
var sliderFxArray = new Array();
var pos = 0;
function CheckNextPrevButtons(pos)
{
 
    var previousButton=document.getElementById('leftNav');
    var nextButton=document.getElementById('rightNav');
    
 /* alert(pos);
  alert(sliderFrames.length);*/
   if (pos>0 && pos<(sliderFrames.length -1))
   {
     previousButton.src='/images/Features/feature_arrow_left_up.gif';
     nextButton.src='/images/Features/feature_arrow_right_up.gif'; 
     previousButton.style['cursor']="pointer";  
     nextButton.style['cursor']="pointer";
     
   }	
	   
	  if (pos==0) {
            previousButton.src='/images/Features/feature_arrow_left_off.gif';	        
            nextButton.src='/images/Features/feature_arrow_right_up.gif';
            previousButton.style['cursor']="default";
            
        }
        if (pos==(sliderFrames.length -1)) {
          
            nextButton.src='/images/Features/feature_arrow_right_off.gif';
             previousButton.src='/images/Features/feature_arrow_left_up.gif';
              nextButton.style['cursor']="default";
        }
}

window.addEvent('domready', function(){
     scrollslider = new Fx.Scroll('slider', {
		wait: false,
		duration: 500,
		offset: {'x': -0, 'y': -0 },
		transition: Fx.Transitions.Quad.easeInOut
	});
	
	sliderFrames = $$('#slider .slide');
	sliderPrevButton =$$('#prev-button');
    sliderNextButton =$$('#next-button');
	
	scrollslider.toElement(sliderFrames[0].id);
	
	$$('.prev-frame').each(function(next, i) {
	  
	    next.addEvent('click', function(event) {
	          
	         event = new Event(event).stop();
	         if(pos > 0) {
			    pos--;
				scrollslider.toElement(sliderFrames[pos].id);
				CheckNextPrevButtons(pos);
			} else {
			    		        
				/*pos = sliderFrames.length -1;
				scrollslider.toElement(sliderFrames[pos].id);*/
			}
			
			
		});
	});
	
	$$('.next-frame').each(function(next, i) {  
	        next.addEvent('click', function(event) {
	           
			    event = new Event(event).stop();
			        		
			    if(pos < sliderFrames.length -1) {    
				    pos++;
				    scrollslider.toElement(sliderFrames[pos].id);
				     CheckNextPrevButtons(pos); 
			    } else {		        
				   /* pos = 0;
				    scrollslider.toElement(sliderFrames[pos].id);*/
			    }
			      
		    });
	    });
});


function showFeature(slideNumber)
{
   var scrollslider1 = new Fx.Scroll('slider', {
		wait: false,
		duration: 0,
		offset: {'x': -0, 'y': -0 },
		transition: Fx.Transitions.Quad.easeInOut
	});
  //  alert(slideNumber);
    var slidewrapper=document.getElementById('Slidewrapper');
   
    slidewrapper.style['display']="block";
    
     scrollslider1.toElement(sliderFrames[slideNumber].id);
     //var myFx = new Fx.Slide(sliderFrames[slideNumber].id).slideOut('horizontal');
    CheckNextPrevButtons(slideNumber); 
    pos=slideNumber;
}

function HideFeature()
{
    var slidewrapper=document.getElementById('Slidewrapper');
    slidewrapper.style['display']="none";
}