function bascule(elem)
   {
   etat=document.getElementById(elem).style.display;
   if(etat=="none"){
   document.getElementById(elem).style.display="block";
   }
   else{
   document.getElementById(elem).style.display="none";
   }
   }
function one()
{
document.getElementById(1).style.display="none";
}
function two()
{
document.getElementById(2).style.display="none";
}
function three()
{
document.getElementById(3).style.display="none";
}
function four()
{
document.getElementById(4).style.display="none";
}

function DoAllTheseOne() {
var retvalue;

retvalue = two();
if(retvalue == false) { return retvalue; }
retvalue = three();
if(retvalue == false) { return retvalue; }
retvalue = four();
if(retvalue == false) { return retvalue; }
retvalue = bascule(1);
if(retvalue == false) { return retvalue; }

}

function DoAllTheseTwo() {
var retvalue;

retvalue = one();
if(retvalue == false) { return retvalue; }
retvalue = three();
if(retvalue == false) { return retvalue; }
retvalue = four();
if(retvalue == false) { return retvalue; }
retvalue = bascule(2);
if(retvalue == false) { return retvalue; }

}

function DoAllTheseThree() {
var retvalue;

retvalue = one();
if(retvalue == false) { return retvalue; }
retvalue = two();
if(retvalue == false) { return retvalue; }
retvalue = four();
if(retvalue == false) { return retvalue; }
retvalue = bascule(3);
if(retvalue == false) { return retvalue; }

}

function DoAllTheseFour() {
var retvalue;

retvalue = one();
if(retvalue == false) { return retvalue; }
retvalue = two();
if(retvalue == false) { return retvalue; }
retvalue = three();
if(retvalue == false) { return retvalue; }
retvalue = bascule(4);
if(retvalue == false) { return retvalue; }

}

function DoAllTheseFive() {
var retvalue;

retvalue = one();
if(retvalue == false) { return retvalue; }
retvalue = two();
if(retvalue == false) { return retvalue; }
retvalue = three();
if(retvalue == false) { return retvalue; }
retvalue = four();
if(retvalue == false) { return retvalue; }
}