var plat;
var isNN6;
var whichone = navigator.userAgent;

if(whichone.indexOf("Windows") != -1)
{
	plat = "win";
}

else if(whichone.indexOf("Mac") != -1)
{
	plat = "mac";
}

else
{
	plat = "win";
}

if(document.getElementById && !document.all)
{
	isNN6 = "NN6_up";
}

else
{
 	isNN6 = "notNN6";
}




function check_it(e)
{


	if(document.all && isNN6 != "NN6_up")
	{	
		var wintop = document.body.scrollTop;
		wintop = -wintop;
		var win_width = parseInt(document.body.clientWidth);
		var w = (win_width/2) - 359;
		var x = event.x;
		var y = event.y;
		
			
			if(x < (650 + w) && x > (620 + w) && y < (380 + wintop) && y > (362 + wintop))
			{
				started = 1;
				scroll_up();
				
			}
			
			else if(x < (650 + w) && x > (620 + w) && y < (415 + wintop) && y > (391 + wintop))
			{
				started = 2;
				scroll_down();
				
			}
			
			else
			{
				started = 0;
			}
	}
	
	else if(document.layers && isNN6 != "NN6_up")
	{	
	
		
		var win_width = parseInt(window.innerWidth);
		var w = (win_width/2) - 360;
		var x = e.pageX;
		var y = e.pageY;
		
			
			if(x < (650 + w) && x > (620 + w) && y < 380 && y > 362)
			{
				started = 1;
				scroll_up();
				
			}
			
			else if(x < (650 + w) && x > (620 + w) && y < 415 && y > 391)
			{
				started = 2;
				scroll_down();
				
			}
			
			else
			{
				started = 0;
			}
	}
	
	else if(document.getElementById && isNN6 == "NN6_up")
	{	
		var win_width = parseInt(window.innerWidth);
		var w = (win_width/2) - 360;
		var x = e.pageX;
		var y = e.pageY;
		
			
			if(x < (650 + w) && x > (620 + w) && y < 380 && y > 362)
			{
				started = 1;
				scroll_up();
				
			}
			
			else if(x < (650 + w) && x > (620 + w) && y < 415 && y > 391)
			{
				started = 2;
				scroll_down();
				
			}
			
			else
			{
				started = 0;
			}
			
	}
	
	else
	{
		;
	}
}

function scroll_up()
{
	
	clearTimeout(scroll_id);
	
	if(plat == "mac" && isNN6 != "NN6_up")
	{
		if(document.all)
		{
		
			var tempTop = currentLayer.style.top;
		
		
			if(parseInt(tempTop)>parseInt(layerTop) && parseInt(tempTop)<0)
			{
				
			 	currentLayer.style.top = (parseInt(tempTop) + 2);
			 	
			}	
			
			if(started == 1)
			{
				var scroll_id = setTimeout("scroll_up()",50);
			}
			
		}
		
		else if(document.layers && isNN6 != "NN6_up")
		{
			
			var tempTop = currentLayer.top;
			
			
			
			if(parseInt(tempTop)>parseInt(layerTop) && parseInt(tempTop)<0)
			{
				
			 	currentLayer.top = (parseInt(tempTop) + 1);
			 	
			}
			
			if(started == 1)
			{
				var scroll_id = setTimeout("scroll_up()",500);
			}
					
		}
		
		else
		{
			;
		}
		
	}
	
	else
	{
		if(document.all && isNN6 != "NN6_up")
		{
		
			var tempTop = currentLayer.style.top;
		
		
			if(parseInt(tempTop)>parseInt(layerTop) && parseInt(tempTop)<0)
			{
			
			 	currentLayer.style.top = (parseInt(tempTop) + 1);
		 	
			}	
		
			if(started == 1)
			{
				var scroll_id = setTimeout("scroll_up()",150);
			}
			
		}
		
		else if(document.layers && isNN6 != "NN6_up")
		{
			
			var tempTop = currentLayer.top;
			
			
			
			if(parseInt(tempTop)>parseInt(layerTop) && parseInt(tempTop)<0)
			{
				
			 	currentLayer.top = (parseInt(tempTop) + 1);
			 	
			}
			
			if(started == 1)
			{
				var scroll_id = setTimeout("scroll_up()",300);
			}
					
		}	
		
		else if(document.getElementById && isNN6 == "NN6_up")
		{
			var tempTop = currentLayer.style.top;
			
			if(parseInt(tempTop)>parseInt(layerTop) && parseInt(tempTop)<0)
			{
			
			 	currentLayer.style.top = (parseInt(tempTop) + 1) + "px";
		 	
			}	
		
			if(started == 1)
			{
				var scroll_id = setTimeout("scroll_up()",300);
			}
		}
		
		else
		{
			;
		}
	}
}


function scroll_down()
{
	clearTimeout(scroll_id);
	
	if(plat == "mac" && isNN6 != "NN6_up")
	{
		if(document.all)
		{
			
			var tempTop = currentLayer.style.top;
			
			
			if(parseInt(tempTop)>parseInt(layerTop) && parseInt(tempTop)>(parseInt(layerTop) + 1))
			{
			 	currentLayer.style.top = (parseInt(tempTop) - 1);
			 	
			 }
			 
			if(started == 2)
			{
				var scroll_id = setTimeout("scroll_down()",50);
				
			}
		
		}
		
		else if(document.layers && isNN6 != "NN6_up")
		{
			
			var tempTop = currentLayer.top;
			
		
			if(parseInt(tempTop)>=parseInt(layerTop) && parseInt(tempTop)>(parseInt(layerTop) + 1))
			{
			 	currentLayer.top = (parseInt(tempTop) - 1);
			 	
			 }
			 
			if(started == 2)
			{	
				var scroll_id = setTimeout("scroll_down()",300);
			}
		
		}
		
		else
		{
			;
		}
	}
	
	
	else
	{
		if(document.all && isNN6 != "NN6_up")
		{
		
			var tempTop = currentLayer.style.top;
			
			
			if(parseInt(tempTop)>parseInt(layerTop) && parseInt(tempTop)>(parseInt(layerTop) + 1))
			{
			 	currentLayer.style.top = (parseInt(tempTop) - 1);
			 	
			 }
			 
			if(started == 2)
			{
				var scroll_id = setTimeout("scroll_down()",150);
				
			}
		
		}
		
		else if(document.layers && isNN6 != "NN6_up")
		{
			
			var tempTop = currentLayer.top;
			
		
			if(parseInt(tempTop)>=parseInt(layerTop) && parseInt(tempTop)>(parseInt(layerTop) + 1))
			{
			 	currentLayer.top = (parseInt(tempTop) - 1);
			 	
			 }
			 
			if(started == 2)
			{	
				var scroll_id = setTimeout("scroll_down()",200);
			}
		
		}
		
		else if(document.getElementById && isNN6 == "NN6_up")
		{
			var tempTop = currentLayer.style.top;
			
			if(parseInt(tempTop)>parseInt(layerTop) && parseInt(tempTop)>(parseInt(layerTop) + 1))
			{
			 	currentLayer.style.top = (parseInt(tempTop) - 1) + "px";
			 	
			 }
			 
			if(started == 2)
			{
				var scroll_id = setTimeout("scroll_down()",150);
				
			}
			
		}
		
		else
		{
			;
		}
		
	}
	

}