//<![CDATA[

function resizeMainDiv() {
	var mainId = document.getElementById('main');
	var mainHeight = mainId.clientHeight;
	if(document.getElementById('sideBars')){
		var sideId = document.getElementById('sideBars');
		var sideHeight = sideId.clientHeight;
		var maxHeight = Math.max(mainHeight, sideHeight);
	}
	
	if(mainHeight < sideHeight){
		mainId.style.height = maxHeight + 'px';
	}
}
function timers() {
	var tid = setTimeout(resizeMainDiv, 500);	
}

/* event ----------------------------------------------------------------------*/

addEvent(window, 'load'  , resizeMainDiv);
addEvent(window, 'resize', resizeMainDiv);
addEvent(window, 'resize', timers);

//]]>