// JavaScript Document
function toggleOptions()
{      
	  document.getElementById('performance-data').style.display = "none";
	  document.getElementById('options').style.display = "block";
}
function togglePerformanceData()
{      
	  document.getElementById('performance-data').style.display = "block";
	  document.getElementById('options').style.display = "none";
}
function toggleSizing()
{      
	  document.getElementById('recommended-data').style.display = "none";
	  document.getElementById('sizing').style.display = "block";
}
function toggleRecommendedData()
{      
	  document.getElementById('recommended-data').style.display = "block";
	  document.getElementById('sizing').style.display = "none";
}