displaying next content teaser in my current node corresponding to the taxonomy and content type

I like to display the next content's teaser of the same taxonomy in my current node. .
Suppose if i create a new content type by CCK (news). In the current node I like to display the teaser content of the next news article similar like if i view a video node i like to see the next video thumbnail image in the current video. . .

Hey dereine,
The problem is simple. I will try to explain as much as i can.
I have Custom pagers and prev/next module.
I got the node template and chose two layered layout. In the left content I gave current node's body, and where as in the right content i like to have the next node's teaser of the same node type and same taxonomy which i have set in view->filters. This allows the viewer to have a look upon the next node's teaser . I got a solution. I hacked the code in views handler(which is not the right way).
I edited the code in function set_argument().
this is the original code.

function set_argument($arg) {
    $this->argument = $arg;
    return $this->validate_arg($arg);
  }

I edited this into

function set_argument($arg) {
if(arg(0)=="node"){
//theming to pass the arguments for displaying next content
$nodeidtype=db_query("select type from {node} where nid='$arg'");//getting the My_type article article
while($fetchtype=db_fetch_array($nodeidtype))

{
  $type=$fetchtype['type'];
}
if($type=="my_type")
{
	$nextelement=db_query("select nid from {node} where type='my_type' and nid<$arg ORDER BY nid DESC limit 0,1");//getting the my_type
	while($fetch=db_fetch_array($nextelement))

	{
 		$nextnid=$fetch['nid'];
		$extra =$nextnid-$arg;
	}

	if(!isset($nextnid))//to display the first article in the last node (rotate it to first article on the last node)customisation
	{
		$firstelement=db_query("select nid from {node} where type='my_type' ORDER BY nid DESC limit 0,1");
		while($fetch_first=db_fetch_array($firstelement))

		{
			 $firstnid=$fetch_first['nid'];
			 $extra =$firstnid-$arg;
		}
	}
}
$this->argument = $arg+$extra; // remove anything other than $arg if present for original
return $this->validate_arg($arg+$extra); // remove anything other than $arg if present for original
}else{$this->argument = $arg; // remove anything other than $arg if present for original
return $this->validate_arg($arg);}
}

I will attach screenshot of that page.