function validate(){
	var result="";
	result+=validateEmail(document.contactus.email);
	result+=validateEmpty(document.contactus.name);
	result+=validateEmpty(document.contactus.message);
	if(result!=""){
	alert(result);
	return false;
	} else { return; }
}
function trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
}

function validateEmail(fld) {
    var error="";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;
   
    if (fld.value == "") {
        fld.style.background = '#FFD2D2';
        error = "You didn't enter your email address.\n";
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.background = '#FFD2D2';
        error = "Please enter a valid email address.\n";
    } else if (fld.value.match(illegalChars)) {
        fld.style.background = '#FFD2D2';
        error = "The email address contains illegal characters.\n";
    } else {
        fld.style.background = '#C9FFCA';
    }

    return error;
}

function validateEmpty(fld) {
    var error = "";
	if (fld.value.length < 4){
		if (fld.value.length == 0) {
        fld.style.background = '#FFD2D2'; 
        error = "You didn't enter your "+fld.name+"\n";
    	} else {
		fld.style.background = '#FFD2D2';
		error = "Minimum 4 characters.\n";
		}
	} else {
        fld.style.background = '#C9FFCA';
    }
    return error;  
}