function stretch_border_div() {
	if ( document.getElementById('column_left_container').offsetHeight > document.getElementById('column_right_container').offsetHeight ) {
		document.getElementById('border_div').style.height = document.getElementById('column_left_container').offsetHeight + 'px';
	}
	else {
		document.getElementById('border_div').style.height = document.getElementById('column_right_container').offsetHeight + 'px';
	}
}

function init() {
	
	stretch_border_div();
	
}


if ( document.addEventListener ) {
	
	window.addEventListener('load', init, false);
	
}
else if ( document.attachEvent ) {
	
	window.attachEvent('onload', init);
	
}