function validateRegFormOnSubmit(theForm) {
var reason = "";
 
  reason += validateEmail(theForm.email);
 if(reason == "") {
  reason += checkPasswordsMatch(theForm.pwd,theForm.pwd2);
}
    if(reason == "") {
  reason += validateEmpty(theForm.email,"email");
}
    if(reason == "") {
  reason += validateEmpty(theForm.pwd,"password");
 } 
    if(reason == "") {
  reason += validateEmpty(theForm.pwd2,"confirm password");
}
  if(reason == "") {
  reason += validatePassword(theForm.pwd);
}
  if(reason == "") {
  reason += validatePassword(theForm.pwd2);
 } 

    if(reason == "") {
  reason += validateChecked(theForm.terms);
 } 

  
  //reason += validateUsername(theForm.username);
  //reason += validatePhone(theForm.phone);
  //reason += validateEmpty(theForm.from);
      
  if (reason != "") {
    alert("Some fields need correction:\n" + reason);
    return false;
  }

  return true;
}

function validateLoginFormOnSubmit(theForm) {
var reason = "";

  reason += validateEmpty(theForm.log,"email");
  reason += validateEmpty(theForm.pwd,"password");
       
  if (reason != "") {
    alert("Some fields need correction:\n" + reason);
    return false;
  }

  return true;
}

function validateEmpty(fld,fld_name) {
    var error = "";
 
    if (fld.value.length == 0) {
        fld.style.background = 'Yellow'; 
        error = "The "+fld_name+" field has not been filled in.\n"
    } else {
        fld.style.background = 'White';
    }
    return error;  
}

function validateChecked(fld) {
    var error = "";
 
    if (fld.checked == false) {
        fld.style.background = 'Yellow'; 
        error = "You must agree to the Terms and Conditions.\n"
    } else {
        fld.style.background = 'White';
    }
    return error;  
}

function validateUsername(fld) {
    var error = "";
    var illegalChars = /\W/; // allow letters, numbers, and underscores
 
    if (fld.value == "") {
        fld.style.background = 'Yellow'; 
        error = "You didn't enter a username.\n";
    } else if ((fld.value.length < 5) || (fld.value.length > 15)) {
        fld.style.background = 'Yellow'; 
        error = "The username is the wrong length.\n";
    } else if (illegalChars.test(fld.value)) {
        fld.style.background = 'Yellow'; 
        error = "The username contains illegal characters.\n";
    } else {
        fld.style.background = 'White';
    }
    return error;
}

function validatePassword(fld) {
    var error = "";
    var illegalChars = /[\W_]/; // allow only letters and numbers 
 
    if ((fld.value.length < 5)) {
        error = "The password has to be over 5 characters long. \n";
        fld.style.background = 'Yellow';
    } else if ((fld.value.length > 14)) {
        error = "The password has to be less than 15 characters long. \n";
        fld.style.background = 'Yellow';
    } else if (illegalChars.test(fld.value)) {
        error = "The password contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } //else if (!((fld.value.search(/(a-z)+/)) && (fld.value.search(/(0-9)+/)))) {
      //  error = "The password must contain at least one numeral.\n";
      //  fld.style.background = 'Yellow';
    //}
     else {
        fld.style.background = 'White';
    }
   return error;
}  

function checkPasswordsMatch(myPwd1,myPwd2) {
   var error = "";
   if(myPwd1.value != myPwd2.value) {
        error = "The passwords don't match.\n";
        myPwd1.style.background = 'Yellow';
        myPwd2.style.background = 'Yellow';
      }
   return error;
}    	

function trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
}

function validateEmail(fld) {
    var error="";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;
   
    if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.background = 'Yellow';
        error = "Please enter a valid email address.\n";
    } else if (fld.value.match(illegalChars)) {
        fld.style.background = 'Yellow';
        error = "The email address contains illegal characters.\n";
    } else {
        fld.style.background = 'White';
    }
    return error;
}