// validate ------------------

function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
  {alert(alerttxt);return false}
else {return true}
}
}



function validate(thisform)
{
	var alert_text= '* Denotes essential fields.';
	with (thisform)
	{
		if (validate_required(name,alert_text)==false)
		  {name.focus();return false}
		if (validate_required(email,alert_text)==false)
		  {email.focus();return false}
	}

	document.subscribe.submit();
}


// send form ------------------------

function submitForm(formID){
	document.getElementById(formID).submit();
	return false;
}


// swap image --------------------------

var currentImage = ''

function swapImage(id){
	
	var defaultdiv = document.getElementById('image1');
	defaultdiv.style.display = 'none';
	//var defaultPlus = document.getElementById('plus1');
	//defaultPlus.style.display = 'none';
		
	if(document.all && !document.getElementById) {
		x = document.all[id]
		//y = document.all[id]
	}else{
		x = document.getElementById(id)
		//y = document.getElementById(plusId)
	}
			
	//show div
	if(currentImage == '')
	{
		currentImage = x;
		//currentPlus = y;
	}
	else
	{
		//swap div
		currentImage.style.display = 'none';
		currentImage = x;
		//currentPlus.style.display = 'none';
		//currentPlus = y;
	}
				
	x.style.display = 'inline';
	//y.style.display = 'inline';
}