function rcheight(){
	var leftc = document.getElementById("left_column").clientHeight;
	$("#right_column").height(leftc - 75);
}

/*
 * Image Crossfade
 * Image Array.
 */
var images = new Array(
	"01.jpg",
	"02.jpg",
	"03.jpg"
	);

/*
 * Cycle speed (milliseconds).
 */
var delay = 4000;
var fadedelay = 1500;

/*
 * Crossfade code.
 * When time permits, combine these two functions.
 */
var imagesLength = images.length - 1;
var i = 0;
$(document).ready(function(){
    function transition(){
        if (i > imagesLength) { i = 0; }
		if ($('#layer2').css('opacity') == '0'){
	        $('#layer2').css({ backgroundImage: 'url(/images/banners/' + images[i] + ')' });
	        $('#layer2').animate({ opacity: '1' }, fadedelay);
	        i++;
	        setTimeout(transition, delay);			
	    	} else {
		        if (i > imagesLength) { i = 0; }
		        $('#layer1').css({ backgroundImage: 'url(/images/banners/' + images[i] + ')' });
		        $('#layer2').animate({ opacity: '0' }, fadedelay);
		        i++;
		        setTimeout(transition, delay);
			}
		}	
	    transition();
	});