//Tag to include javascript in document head.

function ras_rollover_js($atts) {
		extract(lAtts(array(
			'default_text' => ''
		),$atts));
$out = '<script language="javascript" type="text/javascript">'.n.n;
$out .= '//<![CDATA['.n.n;

$out .= 'function swapAlt(whichalt) {'.n;
$out .=		 'var text = whichalt.getAttribute("alt");'.n;
$out .=		 'var description = document.getElementById("rollover_dest");'.n;
$out .=		 'description.firstChild.nodeValue = text;'.n;
$out .=		 '}'.n.n;
$out .= 'function defAlt() {'.n;
$out .=		 'var text = "'.$default_text.'";'.n;
$out .=		 'var description = document.getElementById("rollover_dest");'.n;
$out .=		 'description.firstChild.nodeValue = text;'.n;
$out .=		 '}'.n.n;

$out .='//]]>'.n.n;

$out .='</script>'.n;
return $out;
}

//Creates an anchor link or image that activates text when hovered over.
function ras_rollover_src($atts) {
		extract(lAtts(array(
			'rollover_text' => 'rollover_text',
			'display_text' => 'link_text',
			'source_url' => '/index.php',
			'source_image' => '',
			'class'    => __FUNCTION__,
			'escape'	=> '',
			'html_id' => '',
			'id'			=> '',
			'name'		=> '',
			'wraptag' => ''
		),$atts));
               if($source_image){
          $out = '<a class="'.$class.'"  href="'.$source_url.'" onmouseout="defAlt();" onmouseover="swapAlt(this);"       alt="'.$rollover_text.'" >'.
          parse('<txp:image class="'.$class.'" escape="'.$escape.'" html_id="'.$html_id.'" id="'.$id.'" name="'.$name.'" wraptag="'.$wraptag.'" />' )
	   .'</a>';
               } else {
               $out = '<a class="'.$class.'"  href="'.$source_url.'" onmouseout="defAlt();" onmouseover="swapAlt(this);" alt="'.$rollover_text.'" >'.$display_text.'</a>'.n;
               }
return $out;
}

// Creates a destination text node for display of rollover text.
function ras_rollover_dest($atts) {
		extract(lAtts(array(
			'default_text' => ' ',
			'class'    => __FUNCTION__,
            'wraptag' => 'p'
		),$atts));
               $out = '<'.$wraptag.' id="rollover_dest" class="'.$class.'" >'.$default_text.'&nbsp;</'.$wraptag.'>';
return $out;
}