function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    return false
		 }

		 if (str.indexOf(" ")!=-1){
		    return false
		 }

 		 return true
	}

function clear_comments() {
    if (document.getElementById('comments').value == 'Comments') {
        document.getElementById('comments').value = '';
    }

}


function validate_contact_form() {

  var errors = "";

  if (document.getElementById('first_name').value == "") {
      errors += "Please Enter your first name.\n";
  }

  if (document.getElementById('last_name').value == "") {
      errors += "Please Enter your last name.\n";
  }

  if (document.getElementById('address').value == "") {
      errors += "Please Enter your address.\n";
  }

  if (document.getElementById('city').value == "") {
      errors += "Please Enter your city.\n";
  }

  if (document.getElementById('zip').value == "") {
      errors += "Please Enter your zip code.\n";
  }

  if (document.getElementById('phone').value == "") {
      errors += "Please Enter your phone number.\n";
  }

  if (!echeck(document.getElementById('email').value)) {
      errors += "Please Enter a valid email address.\n";
  }

  if (errors != "") {
      alert(errors);
      return false;
  } else {

    return true;
  }
}


function validate_emergency_form() {

  var errors = "";

  if ((document.getElementById('phone').value == "") || (document.getElementById('phonetwo').value == "") || (document.getElementById('phonethree').value == "")) {
      errors += "Please enter a valid phone number.\n";
  }

  if (document.getElementById('name').value == "") {
      errors += "Please enter your name.\n";
  }

  if (errors != "") {
      alert(errors);
      return false;
  } else {

    return true;
  }
}