function clearText(thefield){
if (thefield.value == 'email')
		{ thefield.value = ""; }
}

function validateForm(num) {
	// check name
	if (document.forms[num].elements[0].value == "")
		{
		alert ("Please enter your username.");
		return false;
		}
	
	// check email address
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	var address = document.forms[num].elements[0].value;
	if(reg.test(address) == false) 
		{
	    alert('Please enter a valid email address.');
	    return false;
		}
	
	// check password
	if (document.forms[num].elements[1].value == "") // || (document.forms[0].elements[1].value == """password"))
		{
		alert ("Please enter your password.");
		return false;
		}
return true;
}