var items = new Array( 3, 1, 4, 0, 3, 3 );
var imgplus = new Image();
imgplus.src = "http://www.island.be/images/plus.gif";
var imgminus = new Image();
imgminus.src = "http://www.island.be/images/minus.gif";

function MakeButton(navBut)   
{     
   navBut.style.border = "2px outset rgb(153,204,204)"; 
} 

function ClearButton(navBut)   
{     
   navBut.style.border = "none"; 
} 

function ShowItemId(ItemId,n)
{
	for ( i = 1; i <= items[n-1]; i++ )
	{
	Item = document.getElementById(ItemId + n + i );
	Item.style.display = "block";
	}
}

function HideItemId(ItemId,n)
{
	for ( i = 1; i <= items[n-1]; i++ )
	{
	Item = document.getElementById(ItemId + n + i );
	Item.style.display = "none";
	}
}

function DoOutLine( Item, TargetId )

{
   var TargetItem;

   TargetItem = document.getElementById(TargetId)
   srcItem = document.getElementById("img"+TargetId)

  	if (TargetItem.style.display == "none") 
    {			
		 TargetItem.style.display = "block";
		 srcItem.src = imgminus.src;
    }
    else 
    {
	  	if (TargetItem.style.display == "block") 
	    {
			 TargetItem.style.display = "none";
			 srcItem.src = imgplus.src;
    	}
		else
    	{
			 TargetItem.style.display = "block";
		 	srcItem.src = imgminus.src;
    	}
   	}
}