$(function(){ 
  $.fn.checkFadeOut();
	/*
	$("#fade_img1").hide();
	$("#fade_img2").hide();	
	
	$("#control_scroll_down").bind("mouseenter", function(){ 
			 $("#fade_img2").fadeIn('slow');
	});
	
  $("#control_scroll_up").bind("mouseenter", function(){ 
	   $("#fade_img1").fadeIn('slow');
	});
	
	
  $("#control_scroll_down").bind("mouseleave", function(){ 
			 $("#fade_img2").hide('slow');
	});
	
  $("#control_scroll_up").bind("mouseleave", function(){ 
	   $("#fade_img1").hide('slow');
	});
	*/
	
	
  $("#press_div a.up").bind("mouseenter", function(){ 
  
	 $.fn.startScrollDown();
	
  }); 
	
  $("#press_div a.up").bind("mouseleave", function(){ 
 
	 $.fn.stopScrollDown();
	
  }); 
		
	
  $("#press_div a.dn").bind("mouseenter", function(){ 
	  
		$.fn.startScrollUp();
		
  }); 
		
	
  $("#press_div a.dn").bind("mouseleave", function(){ 
	  
		$.fn.stopScrollUp();
		
  }); 
		
}); 

var startIntervallDown = "";
var startIntervallUp = "";

$.fn.stopScrollDown = function() {

 			window.clearInterval(startIntervallDown);
   		intval="";
		
}

$.fn.stopScrollUp = function() {

 				 window.clearInterval(startIntervallUp);
         intval="";
}



$.fn.startScrollDown = function() {
		 
		 startIntervallDown = window.setInterval(function(){
		 
		 $.fn.checkFadeOut();
		 
		 var topVal = $("#press_div a.dn").parents("#press_div").find("#newsList").css("top"); 
     var topVal = topVal.split('p');
		 var topVal = topVal[0];
	
    		if(topVal != -80)
    		{
    		 					
    		   topVal = topVal.replace('-','');
    			 
    			 topVal = topVal - 10;
    			
    		   $("#press_div a.dn").parents("#press_div").find("#newsList").css("top",  '-'+topVal); 
     		
				}else{
				
							window.clearInterval(startIntervallDown);
          		intval="";
				}				
		
		},50);		
}



$.fn.startScrollUp = function() {
		
	  startIntervallUp = window.setInterval(function(){
		
		$.fn.checkFadeOut();
		var topVal = $("#press_div a.up").parents("#press_div").find("#newsList").css("top"); 
			
		var cHeight = $("#press_div a.up").parents("#press_div").find("#newsList").css("height");
		 
    var topVal = topVal.split('p');
		var topVal = topVal[0];
		var max_scrollDwn = document.getElementById("newsList").offsetHeight -100;
	
		
		if(topVal.replace('-','') < max_scrollDwn)
		{
				$("#press_div a.up").parents("#press_div").find("#newsList").css("top", topVal - 10); 	
	 	}else{
 				
			 window.clearInterval(startIntervallUp);
         intval="";		
		}			
			
			
				
		},50);
}

$.fn.checkFadeOut = function() {
	
	var topVal = $("#press_div a.up").parents("#press_div").find("#newsList").css("top");		
	var topVal = topVal.split('p');
	var topVal = topVal[0].toString();
  var max_scrollDwn = document.getElementById("newsList").offsetHeight -100;
	

		
				
				if(topVal >= -80)
				{
				 $('#fade_img1').css("visibility",'hidden');
				
				}else
				{
				 $('#fade_img1').css("visibility",'visible');
				}
				
				
				if(topVal.replace('-','') >= max_scrollDwn)
				{
				  $('#fade_img2').css("visibility",'hidden');
				}else{
				   $('#fade_img2').css("visibility",'visible');
				}	
				
				
	
}