//////////// email validation script
/////////////////////////////////////////////////////////////
// Email validation script I borrowed from who knows where...

function validEmail(email) {
    invalidChars = "/:,;"

    for (i=0;i<invalidChars.length;i++) {
        badChar = invalidChars.charAt(i)
        if (email.indexOf(badChar,0) > -1) {
            return false
        }
    }
    atPos = email.indexOf("@",1)
    if (atPos == -1) {
        return false
    }
    if (email.indexOf("@",atPos+1) > -1) {
        return false
    }
    periodPos = email.indexOf(".",atPos)
    if (periodPos == -1) {
        return false
    }
    if (periodPos+3 > email.length) {
        return false
    }
    return true

}

//////////////////////////////////////////////////////////////////
// Popup Window Function.


function popupWindow (url,winName,details) {
	var showWindow = window.open(url,winName,details);
}





function ValidateContactForm() {

	var the_form = document.forms['form_contact'];
	
	
	if (the_form.first_name.value == "") {
		alert ("Please enter your first name");
		the_form.first_name.focus();
		return false;
	}
	
	if (the_form.last_name.value == "") {
		alert ("Please enter your last name");
		the_form.last_name.focus();
		return false;
	}
		
	if (the_form.email1.value == "") {
		alert ("Please enter your email");
		the_form.email1.focus();
		return false;
	}
	
	if (the_form.email2.value == "") {
		alert ("Please enter your email twice");
		the_form.email2.focus();
		return false;
	}
	
	if (the_form.body.value == "") {
		alert ("Don't forget to enter your message");
		the_form.body.focus();
		return false;
	}
	
	
	// also check that the email is in a valid format at least...
	if (!validEmail(the_form.email1.value)) {
		alert ("Your first email entry does not look like a valid email format to me. Please double check your typing.");
		the_form.email1.focus();
		return false;
	}
	
	if (!validEmail(the_form.email2.value)) {
		alert ("Your second email entry does not look like a valid email format to me. Please double check your typing.");
		the_form.email2.focus();
		return false;
	}
	
	// make sure that the email address match each other
	if ((the_form.email1.value) != (the_form.email2.value) ) {
		alert ("The two email address that you entered do not match each other. Please check your typing.");
		the_form.email2.focus();
		return false;
	}

	
	document.form_contact.submit();
	
}



function ValidateTeleseminarForm() {

	var the_form = document.forms['form_teleseminar'];
	
	
	if (the_form.first_name.value == "") {
		alert ("Please enter your first name");
		the_form.first_name.focus();
		return false;
	}
	
	if (the_form.last_name.value == "") {
		alert ("Please enter your last name");
		the_form.last_name.focus();
		return false;
	}
		
	if (the_form.email1.value == "") {
		alert ("Please enter your email");
		the_form.email1.focus();
		return false;
	}
	
	if (the_form.email2.value == "") {
		alert ("Please enter your email twice");
		the_form.email2.focus();
		return false;
	}
	
	
	
	// also check that the email is in a valid format at least...
	if (!validEmail(the_form.email1.value)) {
		alert ("Your first email entry does not look like a valid email format to me. Please double check your typing.");
		the_form.email1.focus();
		return false;
	}
	
	if (!validEmail(the_form.email2.value)) {
		alert ("Your second email entry does not look like a valid email format to me. Please double check your typing.");
		the_form.email2.focus();
		return false;
	}
	
	// make sure that the email address match each other
	if ((the_form.email1.value) != (the_form.email2.value) ) {
		alert ("The two email address that you entered do not match each other. Please check your typing.");
		the_form.email2.focus();
		return false;
	}

	
	document.form_teleseminar.submit();
	
}



function ValidateMailingList() {

	var the_form = document.forms['mailing_list'];
	
	
	if (the_form.first_name.value == "") {
		alert ("Please enter your first name");
		the_form.first_name.focus();
		return false;
	}
	
	if (the_form.last_name.value == "") {
		alert ("Please enter your last name");
		the_form.last_name.focus();
		return false;
	}
		
	if (the_form.email1.value == "") {
		alert ("Please enter your email");
		the_form.email1.focus();
		return false;
	}
	
	if (the_form.email2.value == "") {
		alert ("Please enter your email twice");
		the_form.email2.focus();
		return false;
	}
	
	
	// also check that the email is in a valid format at least...
	if (!validEmail(the_form.email1.value)) {
		alert ("Your first email entry does not look like a valid email format to me. Please double check your typing.");
		the_form.email1.focus();
		return false;
	}
	
	if (!validEmail(the_form.email2.value)) {
		alert ("Your second email entry does not look like a valid email format to me. Please double check your typing.");
		the_form.email2.focus();
		return false;
	}
	
	// make sure that the email address match each other
	if ((the_form.email1.value) != (the_form.email2.value) ) {
		alert ("The two email address that you entered do not match each other. Please check your typing.");
		the_form.email2.focus();
		return false;
	}

	
	document.mailing_list.submit();
	
}


// Toggle Block Visibility
//
// Use this to toggle the visibility of a block item on the page
// input: item_id

function ToggleBlockVisibility(item_id) {
	if (document.getElementById(item_id).style.display != "block") {
		document.getElementById(item_id).style.display = "block";
	}
	else {
		document.getElementById(item_id).style.display = "none";
	}
}