var myvarshort;
function short() {
        document.getElementById('ms1').style.display = 'none';
        document.getElementById('ms2').style.display = 'none';
		document.getElementById('ms3').style.display = 'none';
		document.getElementById('ms4').style.display = 'none';
		document.getElementById('ms5').style.display = 'none';
		
	document.getElementById('pms1').src = 'http://www.teachexcel.com/images/plus.gif';
	document.getElementById('pms2').src = 'http://www.teachexcel.com/images/plus.gif';
	document.getElementById('pms3').src = 'http://www.teachexcel.com/images/plus.gif';
	document.getElementById('pms4').src = 'http://www.teachexcel.com/images/plus.gif';
	document.getElementById('pms5').src = 'http://www.teachexcel.com/images/plus.gif';

	
}
function shortexpand (i) {
        short();
        if (myvarshort == i) {
		document.getElementById('p' + i).src = 'http://www.teachexcel.com/images/plus.gif';
		document.getElementById(i).style.display = 'none';
		myvarshort = '';
	}
        else {
		document.getElementById('p' + i).src = 'http://www.teachexcel.com/images/minus.gif';
		document.getElementById(i).style.display = 'block';
		myvarshort = i;
	}
}