function showAddress(ext,domain,name,_class,addtxt)
{
	var add = name + '@' + domain + '.' + ext;
	if (addtxt == "")
		addtxt = add;
	document.write('<a href="mail' + 'to:' + add + '" class="' + _class + '">' + addtxt + '</a>');
}

/* only allows numbers to be entered */
function numbersonly(myfield, e) {
	var key;
	var keychar;

	if (window.event)
	   key = window.event.keyCode;
	else if (e)
	   key = e.which;
	else
	   return true;
	keychar = String.fromCharCode(key);

	// control keys
	if ((key==null) || (key==0) || (key==8) || 
		(key==9) || (key==13) || (key==27) )
	   return true;

	// numbers
	else if ((("0123456789").indexOf(keychar) > -1))
	   return true;
	
	else if (key == 13 && (myfield.value == ""))
	{
		alert('Please enter a quantity');
		return false;
	}

	else
	   return false;
}