/*  
    dw_random.js - random image rotation - version date: May 2005
    requires dw_rotator.js 
*/

/*************************************************************************
    This code is from Dynamic Web Coding at dyn-web.com
    Copyright 2001-5 by Sharon Paine 
    See Terms of Use at www.dyn-web.com/bus/terms.html
    regarding conditions under which you may use this code.
    This notice must be retained in the code as is!
*************************************************************************/
dw_RandRotator.prototype=new dw_Rotator();

function dw_RandRotator(sp,pt,bClickable,bMouse,tgt)
{
  this.num=dw_Rotator.col.length;
  this.name="RandRotateImg"+this.num;
  this.mouseEvs=bMouse;
  this.clickable=bClickable;
  this.rObj=dw_Rotator;
  this.rObj(this.name,sp,pt,tgt);
};

dw_RandRotator.prototype.setUpImage=function(imgAr,w,h,bTrans)
{
  this.trans=bTrans;
  this.ctr=Math.floor(Math.random()*imgAr.length);
  var img=imgAr[this.ctr];
  var imgStr='<img name="'+this.name+'" src="'+this.path+img+'"'; 
  imgStr+=(typeof w=="number")?' width="'+w+'"':'';imgStr+=(typeof h=="number")?' height="'+h+'"':'';imgStr+=' alt="">';
  var str="";

  if(this.clickable)
  {
    str+='<a href="" onclick="return dw_Rotator.doClick('+this.num+')"';
    if(this.mouseEvs)
    {
      str+=' onmouseover="dw_Rotator.pause('+this.num+')"';
      str+=' onmouseout="dw_Rotator.resume('+this.num+')"';
    }
    
    str+=' onfocus="this.blur()">'+imgStr+'</a>';
  }
  else
  {
    str=imgStr;
  }

  document.write(str);
  document.close();

  for(var i=0;imgAr[i];i++) this.addImages(imgAr[i]);

};

dw_RandRotator.prototype.rotate=function()
{
  clearTimeout(this.timer);
  this.timer=null;
  var ctr=Math.floor(Math.random()*this.imgs.length);
  var i=0;
  
  while(ctr==this.ctr&&i<6)
  {
    ctr=Math.floor(Math.random()*this.imgs.length);
    i++;
  }
  
  this.ctr=ctr;
  var imgObj=document.images[this.name];

  if(!imgObj||!dw_Rotator.ready) return;
  if(this.trans&&typeof imgObj.filters!="undefined")
  {
    imgObj.style.filter='blendTrans(duration=1)';

    if(imgObj.filters.blendTrans)imgObj.filters.blendTrans.Apply();
  }

  imgObj.src=this.imgs[this.ctr].src;

  if(this.trans&&typeof imgObj.filters!="undefined"&&imgObj.filters.blendTrans) imgObj.filters.blendTrans.Play();
  
  this.timer=setTimeout(this.animString+".rotate()",this.speed);
};