<button onClick="div1()">Try it</button>
<button onClick="div2()">Try it</button>
<button onClick="div3()">Try it</button>

<script>
function div1() {
    var x = document.getElementById('myDIV');
    if (x.style.display === 'none') {
        x.style.display = 'block';
    } else {
        x.style.display = 'none';
    }
}

function div2() {
    var x = document.getElementById('myDIV2');
    if (x.style.display === 'none') {
        x.style.display = 'block';
    } else {
        x.style.display = 'none';
    }
}

function div3() {
    var x = document.getElementById('myDIV3');
    if (x.style.display === 'none') {
        x.style.display = 'block';
    } else {
        x.style.display = 'none';
    }
}
</script>

<div id="rightSideDiv" ></div>
<input type="hidden" id="myHiddenField1" value="<b> Info of div 1</b>" />
<input type="hidden" id="myHiddenField2" value="<b> Info of div 2</b>" />
<input type="hidden" id="myHiddenField3" value="<b> Info of div 3</b>" />

<button onClick="doDisplay('myHiddenField1')">Try it</button>
<button onClick="doDisplay('myHiddenField2')">Try it</button>
<button onClick="doDisplay('myHiddenField3')">Try it</button>

<script>
function doDisplay(hiddenFileldID) {
    var x = document.getElementById(hiddenFileldID).value;
    document.getElementById("rightSideDiv").innerHTML = x;
}
</script>