function match_column_heights() {
	left_column = document.getElementById('middle_left');
	interior_column= document.getElementById('interior_left_bar');
	right_column = document.getElementById('middle_right');
	if(left_column.offsetHeight > right_column.offsetHeight) {
		right_column.style.height = left_column.offsetHeight + 'px';
	} else {
		left_column.style.height = right_column.offsetHeight + 'px';
	}
	interior_column.style.height = left_column.offsetHeight + 'px';
}

window.onload=function(){
	if(document.getElementById){
		match_column_heights();
	}
}