userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function findElement(n,ly) {
	if (browserVers < 4)		return document[n];
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (!elem) {
		for (var i=0;i<curDoc.layers.length;i++) {
			elem = findElement(n,curDoc.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		var img;
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			img = null;
			if (document.layers) {
				img = findElement(changeImages.arguments[i],0);
			}
			else {
				img = document.images[changeImages.arguments[i]];
			}
			if (img) {
				img.src = changeImages.arguments[i+1];
			}
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		help_over = newImage("/images/head/help-over.gif");
		site_map_over = newImage("/images/head/site-map-over.gif");
		questionery_over = newImage("/images/head/questionery-over.gif");
		pnc_over = newImage("/images/head/pnc-over.gif");
		search_over = newImage("/images/head/search-over.gif");
		list_over = newImage("/images/head/list-over.gif");
		map_over = newImage("/images/head/map-over.gif");
		koan_over = newImage("/images/head/koan-over.gif");
		news_over = newImage("/images/menu/news-over.gif");
		license_over = newImage("/images/menu/license-over.gif");
		trouble_over = newImage("/images/menu/trouble-over.gif");
		window_over = newImage("/images/menu/window-over.gif");
		procedure_over = newImage("/images/menu/procedure-over.gif");
		legal_over = newImage("/images/menu/legal-over.gif");
		safe_life_over = newImage("/images/menu/safe_life-over.gif");
		publicity_over = newImage("/images/menu/publicity-over.gif");
		recruit_over = newImage("/images/menu/recruit-over.gif");
		police_over = newImage("/images/menu/police-over.gif");
		comment_over = newImage("/images/menu/comment-over.gif");
		information_over = newImage("/images/menu/information-over.gif");
		preloadFlag = true;
	}
}

function showMenu(idName){
	if(document.getElementById){
		document.getElementById(idName).style.visibility   = 'visible';
	} else if (document.all){
		document.all(idName).style.visibility = 'visible';
	} else if (document.layers){
		document.layers[idName].visibility = 'show';
	}
}

function hideMenu(idName){
	if(document.getElementById){
		document.getElementById( idName ).style.visibility   = 'hidden';
	} else if (document.all){
		document.all( idName ).style.visibility = 'hidden';
	} else if (document.layers){
		document.layers[ idName ].visibility = 'hidden';
	}
}

function gray(idName){
	switch(idName.substr(0, 7)){
	case "menu_ne":
		color = "#fde4c3";
		break;
	case "menu_li":
		color = "#e5f7d3";
		break;
	case "menu_tr":
		color = "#f3d5d5";
		break;
	case "menu_wi":
		color = "#eedaef";
		break;
	case "menu_pr":
		color = "#d4e8f1";
		break;
	case "menu_le":
		color = "#e3dbf0";
		break;
	case "menu_sa":
		color = "#f5d8e3";
		break;
	case "menu_co":
		color = "#e8e3d1";
		break;
	case "menu_pu":
		color = "#f8f7d1";
		break;
	case "menu_re":
		color = "#dadff5";
		break;
	case "menu_in":
		color = "#feeee4";
		break;
	case "menu_po":
		color = "#d6f0dc";
		break;
	}
	if(document.getElementById){
		document.getElementById( idName ).style.background = color;
	} else if (document.all){
		document.all( idName ).style.background = color;
	} else if (document.layers){
		document.layers[ idName ].background = color;
	}
}

function ungray(idName){
	if(document.getElementById){
		document.getElementById( idName ).style.background = '#ffffff';
	} else if (document.all){
		document.all( idName ).style.background = 'white';
	} else if (document.layers){
		document.layers[ idName ].background = 'white';
	}
}

function WinOpen(url, w, h){
	window.open(url,'window2','resizable=1,scrollbars=1,menubar=0,directories=0,status=0,location=0,width='+w+',height='+h);
}