function validate() {
        var f = document.getElementById('cform');
        if(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/.test(f.mail.value)==false) {
            window.alert("Please, enter your Email Address.");
			f.mail.focus();
			return false;
        } else if(f.msg.value=='') {
            window.alert("Please, enter your Message.");
			f.msg.focus();
			return false;
        }
        return true;
    }