function verifyTips(frm){
  
  if(!frm.acceptTerms.checked){
    alert('You must accept the terms and conditions to continue.');
    return false;
  }
  
  stripLeadingDigit(frm.mobileNumber);
  stripPhoneDelimiters(frm.mobileNumber);
  
  if(
    isNotEmpty(frm.mobileNumber, 'T') &&
    isCorrectLength(frm.mobileNumber, 10)
  ){
    return true;
  }
  return false;
}

function verifySweepstakes(frm){
  stripLeadingDigit(frm.mobileNumber);
  stripPhoneDelimiters(frm.mobileNumber);
  if(
    isNotEmpty(frm.firstName, 'T') &&
    isNotEmpty(frm.lastName, 'T') &&
    isNotEmpty(frm.email, 'T') &&
    isEmail(frm.email) &&
    isNotEmpty(frm.mobileNumber, 'T') &&
    isCorrectLength(frm.mobileNumber, 10) &&
    isNotEmpty(frm.age, 'T') && 
    isNum(frm.age) &&
    isNotEmpty(frm.gender, 'S') &&
    isNotEmpty(frm.zipCode) && 
    isNum(frm.zipCode) &&
    isCorrectLength(frm.zipCode, 5) 
  ){
    return true;
  }
  return false;
}

function verifyQuiz(frm){ 
  if(verifyRadio(frm.q1) && verifyRadio(frm.q2) && verifyRadio(frm.q3) && verifyRadio(frm.q4)){
    return true;
  }
  return false;
}

function verifyRadio(quest){
  for(i=0; i<quest.length;i++){
    if(quest[i].checked){
      return true;
    }
  }
  alert("You must answer all questions in order to continue.");
  return false;
}

function isCorrectLength(inputVal, correctlength){
	if(inputVal.value.length != correctlength){
		alert("Value is invalid length. It should be "+correctlength);
		inputVal.focus();
		inputVal.select();
		return false;
	}
	return true;
}

function stripLeadingDigit(inputNum){
  if( inputNum.value.charAt(0) =="1" )
  inputNum.value = inputNum.value.substring(1);
}

function stripPhoneDelimiters(inputNum){
    unformattednum="";
    for(i=0; i<inputNum.value.length;i++)
    {
        if(inputNum.value.charAt(i) >= "0" && inputNum.value.charAt(i) <= "9" )
        unformattednum+=inputNum.value.charAt(i);
    }
    inputNum.value=unformattednum;
}

function isNum(inputNum){
	val = inputNum.value;
	for(i=0; i < val.length; i++){
		if( (val.charAt(i) < "0" || val.charAt(i) > "9") ){
			alert("Input must be numeric");
			inputNum.focus();
			inputNum.select();
			return false;
		}
	}
	return true;
}
function isNotEmpty(inputVal, type){
	if(inputVal.value == ""){
		alert("Required field; cannot be blank");
		if(type=="T" || type=="S"){
		  inputVal.focus();
		}
		if(type == "T"){
			inputVal.select();
		}
		return false;
	}
	return true;
}


function isEmail(email){
	val = email.value;
	invalidChars = " /:,;";
	msg = "Invalid email address! Must be in format user@domain.ext";
	for(i=0; i < invalidChars.length; i++){
		badChar = invalidChars.charAt(i);
		if( val.indexOf(badChar, 0) > -1){
			alert(msg);
			email.focus();
			email.select();
			return false;
		}
	}

	atPos = val.indexOf("@", 1);
	if( atPos == -1){
		alert(msg);
		email.focus();
		email.select();
		return false;
	}

	if(val.indexOf("@", atPos+1)>-1){
		alert(msg);
		email.focus();
		email.select();
		return false;
	}

	periodPos = val.indexOf(".", atPos);
	if(periodPos == -1){
		alert(msg);
		email.focus();
		email.select();
		return false;
	}

	if(periodPos+3 > val.length){
		alert(msg);
		email.focus();
		email.select();
		return false;
	}
	return true;
}

<!-- Original:  Gilbert Davis -->

<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->

<!-- Begin
function loadImages() {
if (document.getElementById) {  // DOM3 = IE5, NS6
document.getElementById('hidepage').style.visibility = 'hidden';
}
else {
if (document.layers) {  // Netscape 4
document.hidepage.visibility = 'hidden';
}
else {  // IE 4
document.all.hidepage.style.visibility = 'hidden';
      }
   }
}
//  End -->



// (C) 2000 www.CodeLifter.com
// http://www.codelifter.com
// Free for all users, but leave in this  header
// NS4-6,IE4-6
// Fade effect only in IE; degrades gracefully

// =======================================
// set the following variables
// =======================================

// Set slideShowSpeed (milliseconds)
var slideShowSpeed = 5000

// Duration of crossfade (seconds)
var crossFadeDuration = 3

// Specify the image files
var Pic = new Array() // don't touch this
// to add more images, just continue
// the pattern, adding to the array below

Pic[0] = 'images/home1.jpg'
Pic[1] = 'images/home2.jpg'
Pic[2] = 'images/home3.jpg'

// =======================================
// do not edit anything below this line
// =======================================

var t
var j = 0
var p = Pic.length

var preLoad = new Array()
for (i = 0; i < p; i++){
   preLoad[i] = new Image()
   preLoad[i].src = Pic[i]
}

function runSlideShow(){
   if (document.all){
      document.images.SlideShow.style.filter="blendTrans(duration=2)"
      document.images.SlideShow.style.filter="blendTrans(duration=crossFadeDuration)"
      document.images.SlideShow.filters.blendTrans.Apply()      
   }
   document.images.SlideShow.src = preLoad[j].src
   if (document.all){
      document.images.SlideShow.filters.blendTrans.Play()
   }
   j = j + 1
   if (j > (p-1)) j=0
   t = setTimeout('runSlideShow()', slideShowSpeed)
}