function collapse1() {

if (document.getElementById('c1').style.display=='none') {
document.getElementById('c1').style.display='block';
document.getElementById('pop1').style.backgroundImage='url(/close.jpg)';
} else {
document.getElementById('c1').style.display='none'
document.getElementById('pop1').style.backgroundImage='url(/open.jpg)';
}
}

function collapse2() {

if (document.getElementById('c2').style.display=='none') {
document.getElementById('c2').style.display='block';
document.getElementById('pop2').style.backgroundImage='url(/close.jpg)';
} else {
document.getElementById('c2').style.display='none'
document.getElementById('pop2').style.backgroundImage='url(/open.jpg)';
}
}