// JavaScript Document
var i=0;
function Show_Hide(a)
{ 
	var answer = "answer"+a;
	var id="answer"+i;
	if (null!=answer)
	{
		if(answer!=id)
    	{ 
			Hide(id	);
			Show(answer);
			i=a;
		}
		else
		{
			Hide(answer);
			i=0;
		}
	}
    
}
function Hide(answer)
{  
	var element = document.all[answer];
	if (null!=element)
	{
	     element.style.display = "";
		 
	}
}
function Show(answer)
{
	var element = document.all[answer];
	if (null!=element)
	{
	     element.style.display = "block" ;
		 
	}
}
var vitritruoc=1;
function doihinhnen(vitri)
{
	if(vitri!=vitritruoc)
	{
		document.getElementById("tuan"+vitri).style.backgroundImage="url(images/hose2.jpg)";
		document.getElementById("chu"+vitri).style.color="#ff0000";
		document.getElementById("tuan"+vitritruoc).style.backgroundImage="url()";
		document.getElementById("chu"+vitritruoc).style.color="#00FF00";
		vitritruoc=vitri;
	}
}
function mousehover(vitri)
{
	if(vitri!=vitritruoc)
	{
		document.getElementById("tuan"+vitri).style.backgroundImage="url(images/hose1.jpg)";
		document.getElementById("chu"+vitri).style.color="#ff0000";
		document.getElementById("tuan"+vitritruoc).style.backgroundImage="url()";
		document.getElementById("chu"+vitritruoc).style.color="#00FF00";
		//vitritruoc=vitri;
	}
}
function mouseout(vitri)
{
	if(vitri!=vitritruoc)
	{
		document.getElementById("tuan"+vitritruoc).style.backgroundImage="url(images/hose2.jpg)";
		document.getElementById("chu"+vitritruoc).style.color="#ff0000";
		document.getElementById("tuan"+vitri).style.backgroundImage="url()";
		document.getElementById("chu"+vitri).style.color="#00FF00";
		//vitritruoc=vitri;
	}
}