function check(emailform) {

    var valid = true,
        e1Error = document.getElementById('emailAddress1_error'),
	email1 = document.emailform.emailAddress1.value;
	validEmail = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9])+$/;
    
	if (document.emailform.emailAddress1.value === '') {
		e1Error.innerHTML = "enter email address";
		valid = false;
    	} else if (emailAddress1.value.match(validEmail)) {
        	e1Error.innerHTML = '';
    	} else {
        	e1Error.innerHTML = "invalid email";
		valid = false;
    	}

	if (valid === true) {
	//	window.alert(1+1);
	} else {
	//	window.alert(2+2);
		event.preventDefault();
	}

}

function ccheck(commentform) {

	var valid = true,
	 cError = document.getElementById('comment_error'),
//	 frm = document.getElementById('commentform').submit();
//	 frm = document.getElementById('commentform').reset();
	 frm = document.getElementById('commentform');

	if (document.commentform.yourName.value === '' && document.commentform.yourComment.value === '') {
		cError.innerHTML = "enter your name & comment";
		valid = false;
	} else if (document.commentform.yourName.value === '') {
		cError.innerHTML = "enter your name";
		valid = false;
    	} else if (document.commentform.yourComment.value === '') {
		cError.innerHTML = "enter comment";
		valid = false;
    	} else {
        	cError.innerHTML = "";
    	}

	if (valid === true) {
	//	window.alert(1+1);
		frm.submit();
		frm.reset();
	} else {
	//	window.alert(2+2);
		event.preventDefault();
	}

}