document.onkeyup = KeyCheck;

function KeyCheck(e)
{
   var KeyID = (window.event) ? event.keyCode : e.keyCode;

   var link;
   var previous;
   var next;
   
   switch(KeyID)
   {  		
   		case 39:

 			previous = document.getElementById('previous'); 
			if(previous != undefined)
			{
				link = previous.getElementsByTagName('a')[0];

				if(link != undefined)
				{
					window.location = link;
				}
			}
	      break;
   		case 37:

 			next = document.getElementById('next'); 
			if(next != undefined)
			{
				link = next.getElementsByTagName('a')[0];

				if(link != undefined)
				{
					window.location = link;
				}
			}	
  	      break;
   		default:   
   }
}

function Show(image,div)
{
		if(document.getElementById(image) !=  null)
		{
			document.getElementById(image).style.visibility = 'visible';
		}
}
function Hide(image,div)
{
		if(document.getElementById(image) !=  null)
		{	
			document.getElementById(image).style.visibility = 'hidden';
		}
}


function SetImageNavigation(id)
{
	

	
		var pic = document.getElementById(id);
	
		var w = pic.offsetWidth;
		var r;
		var l;
		
		var right = document.getElementById('previous-arrow');
		var left = document.getElementById('next-arrow');
		
		if(w < 800)
		{
			r = ((800 - w) / 2) + (w - 15);
			l = ((800 - w) / 2) + 100;
		}
		else
		{
			r = w -15;
			l = 100;
		}
		
		left.style.left = l + 'px';
		right.style.left = r + 'px';
	
}


if (/msie/i.test(navigator.userAgent))
{
	document.write("<style type='text/css'>#menu a{padding-right:17px;}</style>");
}
if (/firefox/i.test(navigator.userAgent))
{
	document.write("<style type='text/css'>#menu a{padding-right:17px;}</style>");
}