// Preload and Image Changer

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

var preloadFlag = false;

function preloadImages() {
	if (document.images) {

		m_home_off       = newImage("images/nav_home01.gif");
		m_home_on        = newImage("images/nav_home02.gif");
		
		m_ourpromise_off = newImage("images/nav_about01.gif");
		m_ourpromise_on  = newImage("images/nav_about02.gif");

		m_ourpromise_off = newImage("images/nav_services01.gif");
		m_ourpromise_on  = newImage("images/nav_services02.gif");

		m_services_off   = newImage("images/nav_products01.gif");
		m_services_on    = newImage("images/nav_products02.gif");

		m_showroom_off   = newImage("images/nav_portfolio01.gif");
		m_showroom_on    = newImage("images/nav_portfolio02.gif");

		m_employment_off = newImage("images/nav_research01.gif");
		m_employment_on  = newImage("images/nav_research02.gif");

		m_conctactus_off = newImage("images/nav_contact01.gif");
		m_conctactus_on  = newImage("images/nav_contactus02.gif");

		preloadFlag = true;
	}
}

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