function handleExplainClick() { 
	var oDiv = document.getElementById("h-content1"); 
	var sNow = String(oDiv.style.display);

 	if (sNow == "none" || sNow == "") 

	oDiv.style.display = "block"; 

	else oDiv.style.display = "none";

	var oLinkDiv = document.getElementById("h-showlink"); 
	oLinkDiv.style.display = "none"; 

 }