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

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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		content_menu_01_over = newImage("images/content_menu_01-over.jpg");
		content_menu_02_over = newImage("images/content_menu_02-over.jpg");
		content_menu_03_over = newImage("images/content_menu_03-over.jpg");
		content_menu_04_over = newImage("images/content_menu_04-over.jpg");
		preloadFlag = true;
	}
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function checksearch()
{
	if(document.getElementById("searchform").keyword.value=="" && document.getElementById("searchform").guideno.value=="")
		return false;
	return true;
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}