function ShowHide1(div1,exp1)
{
var thisLevel = document.getElementById(div1);
var thisImage = document.getElementById(exp1);
if (thisLevel.style.display == "none")
{
thisLevel.style.display = "block";
thisImage.src = "images/sluiten_en.jpg";
}
else
{
var thisLevel = document.getElementById(div1);
thisLevel.style.display = "none";
thisImage.src = "images/doorlezen_en.jpg";
}
}


function ShowHide2(div2,exp2)
{
var thisLevel = document.getElementById(div2);
var thisImage = document.getElementById(exp2);
if (thisLevel.style.display == "none")
{
thisLevel.style.display = "block";
thisImage.src = "images/sluiten_en.jpg";
}
else
{
var thisLevel = document.getElementById(div2);
thisLevel.style.display = "none";
thisImage.src = "images/doorlezen_en.jpg";
}
}


function ShowHide3(div3,exp3)
{
var thisLevel = document.getElementById(div3);
var thisImage = document.getElementById(exp3);
if (thisLevel.style.display == "none")
{
thisLevel.style.display = "block";
thisImage.src = "images/sluiten_en.jpg";
}
else
{
var thisLevel = document.getElementById(div3);
thisLevel.style.display = "none";
thisImage.src = "images/doorlezen_en.jpg";
}
}


function ShowHide4(div4,exp4)
{
var thisLevel = document.getElementById(div4);
var thisImage = document.getElementById(exp4);
if (thisLevel.style.display == "none")
{
thisLevel.style.display = "block";
thisImage.src = "images/sluiten_en.jpg";
}
else
{
var thisLevel = document.getElementById(div4);
thisLevel.style.display = "none";
thisImage.src = "images/doorlezen_en.jpg";
}
}


function ShowHide5(div5,exp5)
{
var thisLevel = document.getElementById(div5);
var thisImage = document.getElementById(exp5);
if (thisLevel.style.display == "none")
{
thisLevel.style.display = "block";
thisImage.src = "images/sluiten_en.jpg";
}
else
{
var thisLevel = document.getElementById(div5);
thisLevel.style.display = "none";
thisImage.src = "images/doorlezen_en.jpg";
}
}