// Flip it on
function roll(imgName) {
document[imgName].src = "i/" + imgName + "-on.gif"
}
// Flip it off
function out(imgName) {
	document[imgName].src = "i/" + imgName + ".gif"	
}
function emailCheck () {
	var re = new RegExp("^[A-Za-z0-9_-]+[A-Za-z0-9_\.\-]*[A-Za-z0-9_-]+@[A-Za-z0-9_-]+[A-Za-z0-9\.-]*\\.[a-zA-Z]{2,4}$","i");
	if(!re.test(document.forms[0].email.value))
	{alert("Your email address is invalid.");}
	//test for required fields
	else if(document.forms[0].name.value == ""){alert("Please enter your first name.");}
	else if(document.forms[0].address.value == ""){alert("Please enter your address.");}
	else if(document.forms[0].state.value == ""){alert("Please enter a state.");}
	else if(document.forms[0].city.value == ""){alert("Please enter your city.");}
	else if(document.forms[0].zip.value == ""){alert("Please enter your zip code.");}
	// If we've gotten this far, everything's valid!
	else {document.forms[0].submit();}
}