link.class.php: Auto generate URL and image links

Dynamic Link Class will generate uniform and accessible URL and image links for any webpage or intranet application. The width and height attributes for images are automatically generated by the getimagesize() function. Link title tips default to the link anchor text if left empty and alternate text for images defaults to the filename and path if left empty. Email links are automatically encoded to equivilent HTML entities to avoid email spambots.