/*  Header rotation script
 *
 */
var lastImg = 7;
var timeInterval = 5000;

$(document).ready(function() {
	initialize_headers();
	if (rotate) {
		setTimeout ( "rotate_headers(" + currentImg + ")", timeInterval );
	}
});

function initialize_headers() {
	for (i=0;i<=7;i++) {
		if (i == currentImg) {
			$("#hdr_img" + i).show();
			$("#hdr_img_title" + i).show();
		} else {
			$("#hdr_img" + i).hide();
			$("#hdr_img_title" + i).hide();
		}
	}
}

function rotate_headers(currentImg) {
	var timerID;
	currentImg++;
	var previousImg = currentImg - 1;
	var lastImg = 7;
	if (currentImg == 1) {
		$("#hdr_img" + lastImg).hide();
		$("#hdr_img_title" + lastImg).hide();
	}
	$("#hdr_img" + currentImg).show('slow', function() {
		$("#hdr_img" + previousImg).hide();
	}).css({"position" : "absolute", "top" : "0", "left" : "0"});
	$("#hdr_img_title" + currentImg).show('slow', function() {
		$("#hdr_img_title" + previousImg).hide();
	}).css({"position" : "absolute", "top" : "15px", "right" : "0"});
	timerID = setTimeout ( "rotate_headers(" + currentImg + ")", timeInterval );
	if (currentImg == lastImg) {
		currentImg = 0;
		clearTimeout ( timerID );
		setTimeout ( "rotate_headers(0)", timeInterval );
	}
}