function extend(el) {
	document.getElementById(el).style.top = '131';
	document.getElementById(el).style.left = '431';
	var myLeft = event.clientX - 5;
	document.getElementById(el).style.left = myLeft;
}
function retractplan() {
	document.getElementById('plan').style.top = '-200';
	document.getElementById('plan').style.left = '-200';
}
function retractabout() {
	document.getElementById('about').style.top = '-200';
	document.getElementById('about').style.left = '-200';
}
function colorup(el) {
	el.style.backgroundColor = 'rgb(231,128,43)';
}
function colorback(el) {
	el.style.backgroundColor = 'rgb(163,89,33)';
}
function fullopa(el) {
	el.style.filter = 'alpha(opacity=100)';
}
function lessopa(el) {
	el.style.filter = 'alpha(opacity=60)';
}