var dMax= 1;
function switchDiv(x) {
var currDiv =   document.getElementById(x);
hideAllDivs();
if (currDiv){
    //currDiv.style.background="#FF00AA "; //= "background-color: red";
    currDiv.style.display="block";
}
}
function hideAllDivs()
{
for ( i=0 ;i<=dMax; i++)
{
document.getElementById('d'+i).style.display="none";
}
}

function showAllDivs()
{
for ( i=0 ;i<=dMax; i++)
{
document.getElementById('d'+i).style.display="block";
}
}


function hideAllDivsBut1st()
{
for ( i=1 ;i<=dMax; i++)
{
if (document.getElementById('d'+i))
{
document.getElementById('d'+i).style.display="none";
}
}
}