function opportunitylistreturn() {
    // hide all the divs
    document.getElementById('opportunitylist').style.display = 'block';
    document.getElementById('opportunitiesreturn').style.display = 'none';
    document.getElementById('opportunitiesreturn').style.display = 'none';
    document.getElementById('comedy').style.display = 'none';
    document.getElementById('under16').style.display = 'none';
    document.getElementById('presenters').style.display = 'none';
    document.getElementById('music').style.display = 'none';
    document.getElementById('film').style.display = 'none';
    document.getElementById('writing').style.display = 'none';
    document.getElementById('entertainment').style.display = 'none';
    document.getElementById('drama').style.display = 'none';
    
}

function showhideopportunities(div_id) {
    // hide all the divs
    document.getElementById('opportunitiesreturn').style.display = 'none';
    document.getElementById('comedy').style.display = 'none';
    document.getElementById('under16').style.display = 'none';
    document.getElementById('presenters').style.display = 'none';
    document.getElementById('music').style.display = 'none';
    document.getElementById('film').style.display = 'none';
    document.getElementById('writing').style.display = 'none';
    document.getElementById('entertainment').style.display = 'none';
    document.getElementById('drama').style.display = 'none';
    
    // show the requested div
    document.getElementById(div_id).style.display = 'block';
    document.getElementById('opportunitylist').style.display = 'none';
    document.getElementById('opportunitiesreturn').style.display = 'block';
}

function showopportunities() {
    
    // show the requested div
	
	document.getElementById('comedy').style.display = 'block';
    document.getElementById('under16').style.display = 'block';
    document.getElementById('presenters').style.display = 'block';
    document.getElementById('music').style.display = 'block';
    document.getElementById('film').style.display = 'block';
    document.getElementById('writing').style.display = 'block';
    document.getElementById('entertainment').style.display = 'block';
    document.getElementById('drama').style.display = 'block';
	
    document.getElementById('opportunitylist').style.display = 'none';
    document.getElementById('opportunitiesreturn').style.display = 'block';
}