Double Click EmailAddress to Open in Outlook

There is a question on Microsoft CRM Forum asking how to: Double Click EmailAddress to Open in Outlook

I think it's worth to bring it here because it's also demonstrate how to send parameters in attachEvent method, so here is the answer:

/* Double Click EmailAddress to Open in Outlook, put into entity.OnLoad */
function CreateEmail(emailAddress) 
{
    return function()
    {
        if (emailAddress != null && emailAddress.value.length > 0) 
        {
            window.navigate("mailto:" + emailAddress.value);
        }
    }
}

crmForm.all.emailaddress1.attachEvent('ondblclick', CreateEmail(crmForm.all.emailaddress1));
crmForm.all.emailaddress2.attachEvent('ondblclick', CreateEmail(crmForm.all.emailaddress2));
crmForm.all.emailaddress3.attachEvent('ondblclick', CreateEmail(crmForm.all.emailaddress3));