// JavaScript Document



	function isValidEmail(email, required) {

		if (required==undefined) {   // if not specified, assume it's required

			required=true;

		}

		if (email==null) {

			if (required) {

				return false;

			}

			return true;

		}

		if (email.length==0) {  

			if (required) {

				return false;

			}

			return true;

		}

		if (! allValidChars(email)) {  // check to make sure all characters are valid

			return false;

		}

		if (email.indexOf("@") < 1) { //  must contain @, and it must not be the first character

			return false;

		} else if (email.lastIndexOf(".") <= email.indexOf("@")) {  // last dot must be after the @

			return false;

		} else if (email.indexOf("@") == email.length) {  // @ must not be the last character

			return false;

		}

		

		return true;

	}



	function allValidChars(email) {

	  var parsed = true;

	  var validchars = "abcdefghijklmnopqrstuvwxyz0123456789@.-_";

	  for (var i=0; i < email.length; i++) {

		var letter = email.charAt(i).toLowerCase();

		if (validchars.indexOf(letter) != -1)

		  continue;

		parsed = false;

		break;

	  }

	  return parsed;

	}





	function validateCForm(){



		var t1 = document.getElementById("t1").value;

		var t2 = document.getElementById("t2").value;

		var t3 = document.getElementById("t3").value;



		if (t1 == ""){

			document.getElementById("er_1").style.display = 'block';

			document.getElementById("t1").focus();

			return false;

		}

		else{

			document.getElementById("er_1").style.display = 'none';

		}





		if (t2 == ""){

			document.getElementById("er_2").style.display = 'block';

			document.getElementById("t2").focus();

			return false;

		}

		else{



			if (! isValidEmail(document.getElementById("t2").value)) {

				document.getElementById("er_2").style.display = 'none';

				document.getElementById("er_4").style.display = 'block';

				document.getElementById("t2").focus();

				return false;

			}

			else{

				document.getElementById("er_4").style.display = 'none';

			}



		}



		if (t3 == ""){

			document.getElementById("er_3").style.display = 'block';

			document.getElementById("t3").focus();

			return false;

		}

		else{

			document.getElementById("er_3").style.display = 'none';

		}



	}