function showDiv(element) { 
 var myVar = document.getElementById(element); 
 myVar.style.display = "block"; 
} 


function hideAll() {
 var myVar = document.getElementById('Dmain'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-1'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-2'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-3'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-4'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-5'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-6'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-7'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-8'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-9'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-10'); 
	 myVar.style.display = "none"; 
 var myVar = document.getElementById('D-11'); 
	 myVar.style.display = "none"; 
}