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) {
		btn_home_over = newImage("../images/btn_home-over.gif");
		btn_company_over = newImage("../images/btn_company-over.gif");
		btn_catalogue_over = newImage("../images/btn_catalogue-over.gif");
		btn_label_over = newImage("../images/btn_label-over.gif");
		btn_faq_over = newImage("../images/btn_faq-over.gif");
		btn_contact_over = newImage("../images/btn_contact-over.gif");
		btn_sitemap_over = newImage("../images/btn_sitemap-over.gif");
		preloadFlag = true;
	}
}


	function login_check_and_submit()
	{
		var target = document.login;
	
		if(target.account_num.value == "")
		{
			alert("Please enter your Customer Account Number");
			target.account_num.focus();
			return false;
		}
	
		if(target.company_id.value == "")
		{
			alert("Please enter your User ID");
			target.company_id.focus();
			return false;
		}
	
		if(target.company_pw.value == "")
		{
			alert("Please enter your Password");
			target.company_pw.focus();
			return false;
		}

		return true;
	}