/* Preload any images here */

arImageSrc = new Array (
	"nav-aboutus-dn.gif",
	"nav-video-dn.gif",
	"nav-services-dn.gif",
	"nav-bulkliquid-dn.gif",
	"nav-reliabilityofservice-dn.gif",
	"nav-washingservice-dn.gif",
	"nav-qualitycontrol-dn.gif",
	"nav-recognition-dn.gif",
	"nav-aboutdrivers-dn.gif",
	"nav-driveropportunities-dn.gif",
	"nav-onlineapplication-dn.gif",
	"nav-driverrequirements-dn.gif",
	"nav-companydrivercomp-dn.gif",
	"nav-owneroppcomp-dn.gif",
	"nav-equipment-dn.gif",
	"nav-contactus-dn.gif"
)

function preloadem(){
	arImageList = new Array ();
	sDirectory = "/images/buttons/";

	for (counter in arImageSrc) {
		arImageList[counter] = new Image();
        	arImageList[counter].src = sDirectory + arImageSrc[counter];
    	}
}

/* This function does the actual image rollover */

function changeIt(oImage){
	var sSrc = oImage.src;
	var iUnderscore = sSrc.lastIndexOf("-");
	var iDot = sSrc.lastIndexOf(".");
	var sState = sSrc.slice(iUnderscore, iDot);
	var sNewImg = sSrc.slice(0, iUnderscore);
	var sExtension = sSrc.slice(iDot);
	if(sState == "-up")
	{
		sNewImg = sNewImg + "-dn" + sExtension;
		eval(oImage).src = sNewImg;
	}
	else
	{
		sNewImg = sNewImg + "-up" + sExtension;
		eval(oImage).src = sNewImg;
	}
	
}