/*
 * requires: main.js, top_image_list.js
 */

var top_img_preloads;

function top_image_set_timeout()
{
	setTimeout("top_image_step();", 3000);
}

function top_image_step()
{
	var elem;
	var idx;
	var url;

	idx = rand(top_photo_list.length);

	url = "/main/v_top_img.php?name=" + top_photo_list[idx]
		+ '&schema=' + schema;

	elem = document.getElementById('head_rect');
	elem.style.backgroundImage = "url('" + url + "')";

	top_image_set_timeout();
}


function top_image_init()
{
	var i;

	/* preload all images */
	top_img_preloads = new Array();

	for (i=0; i<top_photo_list.length; i++) {
		var img = new Image();
		img.src = "/main/v_top_img.php?name=" + top_photo_list[i];
		top_img_preloads[i] = img;
	}
	top_image_set_timeout();
}

page_onload_register(top_image_init);