function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImagesArray(array) {
	if (preloadFlag == true) {
		var d = document; var img;
		for (var i=0; i<array.length; i+=2) {
			img = null; var n = array[i];
			if (d.images) {img = d.images[n];}
			if (!img && d.getElementById) {img = d.getElementById(n);}
			if (img) {img.src = array[i+1];}
		}
	}
}

function changeImages() {
	changeImagesArray(changeImages.arguments);
}


var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		pre_navi_top_over = newImage('img/navi_top_over.gif');
		pre_navi_whats_press_over = newImage('img/navi_whats_press_over.gif');
		pre_navi_flow_over = newImage('img/navi_flow_over.gif');
		pre_navi_rate_over = newImage('img/navi_rate_over.gif');
		pre_navi_media_list_over = newImage('img/navi_media_list_over.gif');
		pre_navi_release_over = newImage('img/navi_release_over.gif');
		pre_navi_media_entry_over = newImage('img/navi_media_entry_over.gif');
		pre_navi_enterprise_list_over = newImage('img/navi_enterprise_list_over.gif');
		pre_navi_enterprise_entry_over = newImage('img/navi_enterprise_entry_over.gif');
		pre_new_entry_over = newImage('img/new_entry_over.gif');
		pre_rss_leader_over = newImage('img/rss_leader_over.gif');
		pre_bunner_chinapress_over = newImage('img/bunner_chinapress_over.gif');
		pre_bunner_google_over = newImage('img/bunner_google_over.gif');
		pre_bunner_fc2_over = newImage('img/bunner_fc2_over.gif');
		pre_bunner_livedoor_over = newImage('img/bunner_livedoor_over.gif');
		pre_bunner_fresheye_over = newImage('img/bunner_fresheye_over.gif');
		pre_bunner_cybozu_net_over = newImage('img/bunner_cybozu_net_over.gif');
		pre_bunner_aol_over = newImage('img/bunner_aol_over.gif');
		pre_bunner_fideli_over = newImage('img/bunner_fideli_over.gif');
		pre_bunner_gci_capital_over = newImage('img/bunner_gci_capital_over.gif');
		pre_bunner_cyberagent_over = newImage('img/bunner_cyberagent_over.gif');
		pre_bunner_advfn_over = newImage('img/bunner_advfn_over.gif');
		pre_bunner_ibtimes_over = newImage('img/bunner_ibtimes_over.gif');
		preloadFlag = true;
	}
}


var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		pre_press_send_over = newImage('img/press_send_over.gif');
		pre_press_received_over = newImage('img/press_received_over.gif');
		pre_press_list_over = newImage('img/press_list_over.gif');
		pre_enterprise_search_over = newImage('img/enterprise_search_over.gif');
		pre_press_add_over = newImage('img/press_add_over.gif');
		pre_press_entry_over = newImage('img/press_entry_over.gif');
		pre_edit_over = newImage('img/edit_over.gif');
		pre_press_search_over = newImage('img/press_search_over.gif');
		preloadFlag = true;
	}
}



var preloadFlag = true;