function isEmpty(str) {
	for (var j=0; j<str.length; j++) {
		if (" " != str.charAt(j)) return false;
	}
	return true;
}

function checkForm(f)
{
	for (var i=0; i<f.elements.length; i++) {
		if (null!=f.elements[i].getAttribute("forcheck")) {
		if (isEmpty(f.elements[i].value) || f.elements[i].value == f.elements[i].getAttribute("forcheck")) {
				alert(f.elements[i].getAttribute("forcheck") + ' field empty!');
				f.elements[i].focus();
				return false;
		}
		}
	}
	//f.go.disabled = true;
	return true;
}

function tfocus(el)
{
	if (el.value == el.getAttribute("default")) {
		el.value = '';
		el.style.color = '#333';
	}
}

function tblur(el)
{
	if (isEmpty(el.value)) {
		el.value = el.getAttribute("default");
		el.style.color = '#959595';
	}
}

function checkMail(mt)
{
	var reg = new RegExp("^[A-Za-z0-9_-]{1,20}@(([A-Za-z0-9-]+\\.)+(com|net|org|mil|edu|gov|arpa|info|biz|inc|name|[a-z]{2})|[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3})$");
	if(!reg.test(mt)) {
		return false;
	} else {
		return true;
	}
}

function displayDiv(id)
{
	obj = document.getElementById(id);
	obj.style.display = (obj.style.display == 'block') ? 'none' : 'block';
}