<?php
/*
* AdRotator : Simple adrotator class
* vedanta dot barooah at gmail dot com
*/

# version 1.2

class AdRotator{
	var $iMax="";
	var $imageIndex="";
	var $imageNames="";
	var $linkNames="";
	
	function AdRotator($images,$links=NULL){
		if(!is_array($images)) die("error: cant find image array");
		else{
			$this->iMax=count($images);
			$this->imageNames=$images;
			$this->linkNames=$links;
		}
	}
	
	function rotate($num){
		if($num > $this->iMax) die("error: not enough images to randomize");
		$image_index=array();
		while(count($image_index)<$num){
			$pin=rand(0,$this->iMax-1);
			if(!in_array("$pin",$image_index))array_push($image_index,$pin);
		}
		$this->imageIndex=$image_index;
	}
	
	function getImages(){
		$tmp=array();
		for($idx=0;$idx<count($this->imageIndex);$idx++) array_push($tmp,$this->imageNames[$this->imageIndex[$idx]]);
		return $tmp;
	}
	
	function showAds($orientation=NULL /* say VERTICAL if you need vertical orientation */,$link_style=NULL,$target="_blank" /* target to open pages in */,$image_style=NULL /* this is the css class that can be used */){
		if(!$link_style){$link_style="text-decoration:none;";}
		if(!$image_style){$image_style="background:#f0f0f0;";}
		$html='';
		for($idx=0;$idx<count($this->imageIndex);$idx++){
			$html.="<a target='".$target."'  style='".$link_style."' href='".$this->linkNames[$this->imageIndex[$idx]]."'><img border=0 src='".$this->imageNames[$this->imageIndex[$idx]]."' style='".$image_style."'></a>\n";
			if($orientation=="VERTICAL")$html.="<br>\n";
		}
		return $html;
	}
	
}
?>