function validate(formObj) {

	warning = "";

	if (formObj.NAME.value == "") warning += "\n - Name";
	if (formObj.EMAIL.value == "") warning += "\n - Email";

	if (
	formObj.chkHarrisburg.checked == false &&
	formObj.chkWilliamsport.checked == false &&
	formObj.chkSpecialEvents.checked == false &&
	formObj.chkVolOpps.checked == false) 
	{
		warning += "\n - Newsletter";
	}
	

	if (warning != "") {
        alert("Sorry, the form cannot be submitted because\nthe following fields are incomplete or invalid:\n" + warning);
		return false;
	}
	
	formObj.submit();
}

function clearOther(formObj) {
    if (formObj.select_amount.options.selectedIndex > 0) formObj.other_amount.value = "";
}


function trim(str) {
    while (str.substring(0,1) == ' ') {
        str = str.substring(1, str.length);
    }
    while (str.substring(str.length-1, str.length) == ' ') {
        str = str.substring(0,str.length-1);
    }
    return str;
}