defaultStatus = "Nasco Construction Services";

self.onerror = function() { return true; }

if (document.images) { // preload rollover images
	imageOn = new Array(); imageOff = new Array();
	for (i=1; i < 8; i++) {
		imageOn[i] = new Image(); imageOn[i].src = "images/nav_0" + i + "_over.gif";
		imageOff[i] = new Image(); imageOff[i].src = "images/nav_0" + i + ".gif"; 
	}
}

function changeImg(imageName,imageNum,on) { // function for swapping rollover images
	if (document.images) {
		if (on) { document[imageName].src = imageOn[imageNum].src; }
		else { document[imageName].src = imageOff[imageNum].src; }
	}
}