/*
  RsSlide
  Multiple independent slide
	Version 1.0
	Last revision: 17/2/2010
  Riksoft - www.riksoft.com

	Rewrite from old code http://slayeroffice.com/code/imageCrossFade/xfade2.html
*/

slide=function(containerId,speedFade)
{
  if(speedFade==undefined) speedFade=3000;
  var d=document, imgs = new Array(), zInterval = null, current=0, pause=false;

  this.run=function so_init()
  {
  	if(!d.getElementById || !d.createElement)return;

    /*
    css = d.createElement('link');
  	css.setAttribute('href','rsslide.css');
  	css.setAttribute('rel','stylesheet');
  	css.setAttribute('type','text/css');
  	d.getElementsByTagName('head')[0].appendChild(css);
  	*/

  	imgs = d.getElementById(containerId).getElementsByTagName('img');
  	for(i=1;i<imgs.length;i++) {
      imgs[i].xOpacity = 0;
    }
  	imgs[0].style.display = 'block';
  	imgs[0].xOpacity = .99;


  	setTimeout(so_xfade,speedFade);
  }

  function so_xfade()
  {
  	cOpacity = imgs[current].xOpacity;
  	nIndex = imgs[current+1]?current+1:0;
  	nOpacity = imgs[nIndex].xOpacity;

  	cOpacity-=.05;
  	nOpacity+=.05;

  	imgs[nIndex].style.display = 'block';
  	imgs[current].xOpacity = cOpacity;
  	imgs[nIndex].xOpacity = nOpacity;

  	setOpacity(imgs[current]);
  	setOpacity(imgs[nIndex]);

  	if(cOpacity<=0)
  	{
  		imgs[current].style.display = 'none';
  		current = nIndex;
  		setTimeout(so_xfade,speedFade);
  	}
  	else
  	{
  		setTimeout(so_xfade,50);
  	}

  	function setOpacity(obj)
  	{
  		if(obj.xOpacity>.99)
  		{
  			obj.xOpacity = .99;
  			return;
  		}

  		obj.style.opacity = obj.xOpacity;
  		obj.style.MozOpacity = obj.xOpacity;
  		obj.style.filter = 'alpha(opacity=' + (obj.xOpacity*100) + ')';
  	}
  }

}