/* JS Functions */

function trim( str ) {

   return str.replace( /^\s*|\s*$/g, "" );

}



function focusEmail( e ) {

	if ( e.value == "E-mail Address" ) {

		e.value = "";

	}

}



function blurEmail( e ) {

	if ( e.value == "" ) {

		e.value = "E-mail Address";

	}

}



function isValidEmail( s ) {

	var bValid = true;

	

	// Check for @ symbol

	bValid = ( s.indexOf("@") != -1 );

	// Check for . after the @

	bValid = ( bValid && ( s.lastIndexOf(".") > s.indexOf("@") ) );

	// Check . is not last character

	bValid = ( bValid && ( s.lastIndexOf(".") < s.length - 2 ) );

	// Check @ is not first character

	bValid = ( bValid && ( s.indexOf(".") > 1 && s.indexOf("@") > 1 ) );

	

	return bValid;

}



function copySelectToCheckbox() {

	with( document.news_sign ) {

		

		// Validate the user's e-mail before going any further

		if ( ! isValidEmail( email.value ) ) {

			alert("Please enter a valid e-mail address.");

			email.value = "";

			email.focus();

			return false;

		}

	

		// Reset all the checkboxes

		var vInputs = getElementsByTagName("INPUT");

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

			if ( vInputs[i].type == "checkbox" )

				vInputs[i].checked = false;

		}



		// Go through the drop-down and select all the checkboxes matching the user's selected options

		for( j = 1; j < drop_91.options.length; j ++ ) {

			if ( drop_91.options[j].selected ) {

				// Ensure the "Please Select" is turned off

				drop_91.options[0].selected = false;

				elements["check_" + drop_91.options[j].value + "_91"].checked = true;

			}

		}

	

		// If "Please Select" still selected, return false

		var bSuccessful = ! drop_91.options[0].selected

		if ( bSuccessful ) {

			doSignup.disabled = true;

		} else {

			alert("You must select at least one job sector");

		}

		return ( bSuccessful );

	}

}



function checkContactForm() {

	clearDefaults();

	

	with( document.contact ) {

		// Ensure all mandatory fields are provided

		if ( trim( first_name.value ) == "" || trim( surname.value ) == "" || trim( phone.value ) == "" || trim( post_code.value ) == "" ) {

			alert("Please enter some information in ALL of the fields in the form.");

			return false;

		}

		

		// Validate the user's e-mail

		if ( ! isValidEmail( email.value ) ) {

			alert("Please enter a valid reply e-mail address.");

			email.value = "";

			email.focus();

			return false;

		}		

	}

	

	return true

}



function updateTip( iTipId ) {

	location.href = "/tips/" + iTipId;

}



function checkFocus( objField, sValueToCheck ) {

	if ( objField.value == sValueToCheck ) {

		objField.value = "";

	}

}



function checkValue( objField, sValueToCheck ) {

	if ( objField.value == "" ) {

		objField.value = sValueToCheck;

	}

}



function checkSendCV() {

	with( document.job_apply ) {

		/* Check the values of the fields */

		if ( name.value == "Your Name" || email.value == "Your E-mail" || phone.value == "Your Phone" ) {

			alert("Please ensure you have completed all required fields before submitting your application.");

			return false;

		}

		

		if ( ! isValidEmail( email.value ) ) {

			alert("Please enter a valid e-mail address before sending your application." );

			email.focus();

			return false;

		}

		

		/* If submitting a CV */

		if ( cv_type[0].checked ) {

			/* Check the name of the file that has been chosen as the person's CV */

			var sFilePath = elements["cv-file"].value;

			if ( sFilePath.indexOf( ".doc" ) == -1 ) {

				alert("You have not chosen a valid Microsoft Word document as your CV.\n\nPlease try again...");

				return false;

			}

		}

	}

	return true;

}



function handleCVType( sValue ) {

	var bAttach = ( sValue == "1" );

	document.getElementById( "attach_cv" ).style.display = ( bAttach ) ? '' : 'none';

}



var aPageDefaults = Array();



function buildDefaults() {

	with( document.forms[0] ) {

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

			aPageDefaults[i] = Array( elements[i].id, elements[i].value );

		}

	}

}



function clearDefaults() {

	var obj;

	with( document.forms[0] ) {

		for( i = 0; i < aPageDefaults.length - 1; i ++ ) {

			obj = document.getElementById( aPageDefaults[i][0] );

			if ( obj && obj.value == aPageDefaults[i][1] ) {

				obj.value = "";

			}

		}

	}

	

	return false;

}



function updateCaptcha() {

	var img = document.getElementById( "captchaImg" );

	img.src = "/libs/captcha/captcha.php";

}