// JavaScript Document
//menu click xo xuong;

var abc=0;
function Show_Hide_123(a)
{ 

    var answer = "answer"+a;
	var id="answer"+abc;
	if (null!=answer)
	{
	
		if(answer!=id)
    	{ 
			if(abc!=0)
			{
			
				Hide_123(id	);
			}
			Show_123(answer);
			abc=a;
		}
		else
		{
			Hide_123(answer);
			abc=0;
		}
	}
    
}
function Hide_123(answer)
{ 
	if (null!=answer)
	{    
	     document.getElementById(answer).style.display = "none";
	}
}
function Show_123(answer)
{
	if (null!=answer)
	{
	     if(document.getElementById(answer).style.display == "block")
		 {
			 document.getElementById(answer).style.display = "none"
		 }
		 else
		 { 
			 document.getElementById(answer).style.display = "block"
		 }
		 
	}
}
//menu thay doi hinh nen