function showSlide(n) {
	hideSlides();
	eval('Effect.Appear("s'+n+'")');
}

function hideSlides() {
	nslides = 8;
	for(i=1;i<=nslides;i++) {
		eval('document.getElementById("s'+i+'").style.display = "none";');
	}
}

function doValidation() {
//	alert('hello');
	var form1 = document.challenge;
	fName=form1.name.value;
	fCompany=form1.company.value;
	fTel=form1.tel.value;
	fEmail=form1.email.value;
	fChallenge=form1.challenge.value;

	if (
	(fName=='') || 
	(fCompany=='') || 
	(fTel=='') || 
	(fChallenge=='') || 
	(fEmail=='')) {
		alert('Please ensure all fields are complete before submitting your challenge.');
		//event.returnValue=false;
		return false;
	}
}