function loadFirstLayer(){
	var whichLayer = 'section0';
	if (document.getElementById)
	{		
		// this is the way the standards work
		var style2 = document.getElementById(whichLayer).style;
		var style3 = document.getElementById('plus_'+whichLayer).style;	
	}
	else if (document.all)
	{
		// this is the way old msie versions work
		var style2 = document.all[whichLayer].style;
		var style3 = document.all['plus_'+whichLayer].style;	
	}
	else if (document.layers)
	{
		// this is the way nn4 works
		var style2 = document.layers[whichLayer].style;
		var style3 = document.layers['plus_'+whichLayer].style;
	}	
	style2.display = 'block';
	style3.visibility = 'visible';	
}


function toggleLayer(whichLayer, totalLayers)
{
	hideAllLayers(totalLayers);
	
	if (document.getElementById)
	{		
		// this is the way the standards work
		var style2 = document.getElementById(whichLayer).style;
		var style3 = document.getElementById('plus_'+whichLayer).style;		
	}
	else if (document.all)
	{
		// this is the way old msie versions work
		var style2 = document.all[whichLayer].style;
		var style3 = document.all['plus_'+whichLayer].style;	
	}
	else if (document.layers)
	{
		// this is the way nn4 works
		var style2 = document.layers[whichLayer].style;
		var style3 = document.layers['plus_'+whichLayer].style;
	}	
	style2.display = 'block';
	style3.visibility = 'visible';		
}


function hideAllLayers(total)
{
	for(var x = 1; x <= total; x++)
	{
		var whichLayer = 'section' + (x-1);
		if (document.getElementById)
		{		
			// this is the way the standards work
			var style2 = document.getElementById(whichLayer).style;
			var style3 = document.getElementById('plus_'+whichLayer).style;		
		}
		else if (document.all)
		{
			// this is the way old msie versions work
			var style2 = document.all[whichLayer].style;
			var style3 = document.all['plus_'+whichLayer].style;
		}
		else if (document.layers)
		{
			// this is the way nn4 works
			var style2 = document.layers[whichLayer].style;
			var style3 = document.layers['plus_'+whichLayer].style;
		}	
		style2.display = 'none';
		style3.visibility = 'hidden';			
		
	}
}