File Source for class_b

<?php
class b_document extends b_element {
    var $docType;
    
    function b_document( $type = 'transitional' ) { 
    /*
    *    NOTE: i've removed the namespace declarations, they are:
    *    transitional:     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
    *    strict:            "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"
    *    frameset:        "http://www.w3.org/TR/html4/frameset.dtd"
    */
        if( $type == 'transitional' ) {
            $this->docType = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">';
        } else if( $type == 'strict' ) {
            $this->docType = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN">';
        } else if( $type == 'frameset' ) {
            $this->docType = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN">';
        }
        
        parent::HTMLElement();
    }
    
    function to_html() {
        $return = "\n<?xml version='1.0' encoding='utf-8'?>\n";
        $return .= $this->docType;
        
        foreach( $this->childNodes as $node ) {
            $return .= $node->to_html();
        }
        
        return $return;
    }
}
 
class b_element extends HTMLElement {
 
    /*
    *    b_element is an extension of the standard DOM interface which
    *    allows DOM objects to be instantiated with 4 parameters: 
    *    $tag         - same as standard DOM: specifies the type of node to create
    *    $id            - sets the node's id attribute
    *    $init_val    - can be either text or a child node.  in the case of text it 
    *                    appends a text node with the given value, in the case of
    *                    a child node it appends the child node
    *    $attrs        - an array of name:value attributes
    *    
    *    example: to create a new div with a title containing text 'hello world' and inline style declaration:
    *    $layer = new b_elment( 'div', 'layer1', new b_element( 'h1', 'title1', 'hello world' ), array( 'style'=>'position:absolute;left:10px;top:10px' ) );
    */
                                            
    function b_element( $tag, $id = NULL, $init_val = NULL, $attrs = array() ) {
        //construct the parent DOM object
 
        parent::HTMLElement($tag);
        if( $id ) { $this->setAttribute( 'id', $id ); }
        if( $init_val ) { $this->appendChild( $init_val ); }
        $this->setAttributes( $attrs );
    }
}
 
?>
Source for file class_b_element.php
