{formend:themeform}
{validate:themeform:isNotNull("themename","Image name cannot be blank.")}
{validate:themeform:isNotNull("theme","Plase select an image file.")}
{validate:themeform:isNotNull("image_description","Image description cannot be blank.")}
{validate:themeform:isNotNull("image_url","Image url cannot be blank.")}