var fullURL = parent.document.URL;
    
    var q = fullURL.substring(fullURL.indexOf('?') + 3, fullURL.length);
    
    if (q == "t") {

        document.getElementById('thanks').style.display = 'block';
    }


    function CheckForm() {
        var name = document.getElementById('txtName').value;
        var email = document.getElementById('txtEmail').value;
		var comments = document.getElementById('txtComments').value;

        if (name == "") {
            alert("Please fill your name.");
            document.getElementById('txtName').focus();
            return false;
        }

        if (email== "") {
            alert("Please fill your email.");
            document.getElementById('txtEmail').focus();
            return false;
        }
		if (comments== "") {
            alert("Please enter Comments.");
            document.getElementById('txtComments').focus();
            return false;
        }
        
        return validate_email(document.getElementById('txtEmail'));

        //return true;
    }

    function validate_email(field) {
        with (field) {
            apos = value.indexOf("@");
            dotpos = value.lastIndexOf(".");
            if (apos < 1 || dotpos - apos < 2)
            { alert("Please fill a valid email address."); return false; }
            else { return true; }
        }
    }