function registeruser(user)
 {
	if(!user)
	 {
		alert("Please log in to view this tech unit."); 
		return false;
	 }
	else 
	{
	return true;	
	}
 }
function registeruser_order(user)
 {
	if(!user)
	 {
		alert("Please log in to place an order."); 
		return false;
	 }
	else 
	{
	return true;	
	}
 }