function init() {
	var elm = document.getElementById('main');
	elm.style.height = 'auto';
	var x = elm.offsetHeight;
	elm.style.height = x + "px"; 
	
	var elm2 = document.getElementById('sidebar1');
	elm2.style.height = x + "px"; 

	var elm3 = document.getElementById('sidebar2');
	elm3.style.height = x + "px";
}


function init2() {
	var elm = document.getElementById('main2');
	elm.style.height = 'auto';
	var x = elm.offsetHeight;
	elm.style.height = x + "px"; 
	
	var elm2 = document.getElementById('sidebar1');
	elm2.style.height = x + "px"; 
}

function init3() {
	var elm = document.getElementById('main3');
	elm.style.height = 'auto';
	var x = elm.offsetHeight;
	elm.style.height = x + "px"; 
}