// JavaScript Document
var myvar;
function menuinit() {
    document.getElementById('m1').style.display = 'none';
    document.getElementById('m2').style.display = 'none';
	document.getElementById('pm1').src = 'images/plus.png';
	document.getElementById('pm2').src = 'images/plus.png';
}
function menuexpand (i) {
    menuinit();
    if (myvar == i) {
		document.getElementById('p' + i).src = 'images/plus.png';
		document.getElementById(i).style.display = 'none';
		myvar = '';
	}
    else {
		document.getElementById('p' + i).src = 'images/minus.png';
		document.getElementById(i).style.display = 'block';
    	myvar = i;
	}
}