function Exists(userEntry)

{
	var aCharExists = 0;
	var entry = userEntry;

	if (entry)
	{
		for (var i = 0; i < entry.length; i++)
		{
			if (entry.charAt(i) != " ") aCharExists = 1;
		}
	}

	if (!aCharExists) return 0;
	return 1;
}

function checkInput(form)
{
        var error = "";

        if ( !Exists(form.CATEGORY.value))
                error += "You need to select a category.\n";
        if ( !Exists(form.KEYWORD.value) )
                error += "Please input key word(s) to search.\n";
        if ( error == "" )
	{
                return true;
	}
        else
	{
                alert(error);
                return false;
        }
}