function change(id)
{
	var targetElement;
	targetElement = document.getElementById(id);
	var statement = targetElement.style.display;
	//alert(statement);
	
	if (statement != "block")
	{
		//alert(targetElement.style.display);
		targetElement.style.display = "block" ;
	} 
	else 
	{
		//alert(targetElement.style.display);
		targetElement.style.display = "none" ;
	}
}// JavaScript Document