rollOverTrail="0"

function imgSwap(x,y){
if(rollOverTrail !=x)
	document.images[x].src=eval(x+y).src
	}
	
	function preload(imgObj,imgSrc) {
	if (document.images) {
		eval(imgObj+' = new Image()')
		eval(imgObj+'.src = "'+imgSrc+'"')
	}
}

preload('contactUp','images/but-contact-up.gif')
preload('contactOver','images/but-contact-over.gif')
preload('faqUp','images/but-faq-up.gif')
preload('faqOver','images/but-faq-over.gif')
preload('locationsUp','images/but-locations-up.gif')
preload('locationsOver','images/but-locations-over.gif')
preload('ratesUp','images/but-rates-up.gif')
preload('ratesOver','images/but-rates-over.gif')
preload('reservationsUp','images/but-reservations-up.gif')
preload('reservationsOver','images/but-reservations-over.gif')
preload('travelguideUp','images/but-travelguide-up.gif')
preload('travelguideOver','images/but-travelguide-over.gif')
preload('vehiclesUp','images/but-vehicles-up.gif')
preload('vehiclesOver','images/but-vehicles-over.gif')
preload('toursUp','images/but-tours-activities-up.gif')
preload('toursOver','images/but-tours-activities-over.gif')

function changeNavBut(x){
rollOverTrail=x
document.images[x].src=eval(x+'Over').src
}


function checkFields() {
missinginfo = "";
if (document.form.name.value == "") {
missinginfo += "\n     -  Name";
}
if ((document.form.email.value == "") || 
(document.form.email.value.indexOf('@') == -1) || 
(document.form.email.value.indexOf('.') == -1)) {
missinginfo += "\n     -  Email address";
}
if(document.form.comments.value == "") {
missinginfo += "\n     -  Comments";
}

if (missinginfo != "") {
missinginfo ="_____________________________\n" +
"You failed to correctly fill in your:\n" +
missinginfo + "\n_____________________________" +
"\nPlease re-enter and submit again!";
alert(missinginfo);
return false;
}
else return true;
}