In your HTML HEADER add this code

<script type="text/javascript">
function clearText(thefield){
if (thefield.defaultValue==thefield.value)
thefield.value = ""
}
</script>

In your html input tag add this code

onfocus="clearText(this);"

Upon installing spanish on the front end, I recieved an error in yellow about not having the correct files for the language spanish, yet the front end spanish worked. To fix the problem download this zip, unzip and drop the admin folder into your root zen directory. Then push all the files to the server.

Download Admin Spanish Pack for Zen Cart 1.3.8 Now