function show_answer(param)
	{

// this is to decide even or odd.  If str = 1 then its odd if its 0 then its even.
var str = (param.substring(8,10));
var response = "r"+str;
str = parseInt(str);
var mod = str % 2
if (mod > 0) 
{
	str = str + 1;
	
	}
else
	{
	str = str - 1;
}
	var oppositebox = "checkbox" + str;
document.getElementById(oppositebox).checked = false;

for (i=1;i<=14;i++)
{
	
var res="r"+i;

document.getElementById(res).style.display="none";
}


// This is to provide response txt in a confirm popup.
//txt=document.getElementById(param).id;

document.getElementById(response).style.display="block";



}