function hover(el,sndIndex) {
    //el.className = "prizeHover";
    //alert(el.childNodes.length)
    divs = el.getElementsByTagName("DIV")
    divs[1].style.color = "#0000FF";
    divs[sndIndex].style.color = "#0000FF";
    el.getElementsByTagName("IMG")[0].className = "prizeImgHover"
  }
  function unHover(el,sndIndex) {
    //el.className = "prize";
    divs[1].style.color = "";
    divs[sndIndex].style.color = "#000000";
    el.getElementsByTagName("IMG")[0].className = "prizeImg";

  }
  function centerElement(el) {
      clientX = (self.innerWidth || document.documentElement.clientWidth || document.body.clientWidth || document.body.scrollWidth);
      clientY = (self.innerHeight || document.documentElement.clientHeight || document.body.clientHeight || document.body.scrollHeight);
      scrollX = (self.pageXoffset || document.documentElement.scrollLeft || document.body.scrollLeft);
      scrollY = (self.pageYoffset || document.documentElement.scrollTop || document.body.scrollTop);
      el.style.marginLeft = "-" + ((el.clientWidth / 2) - scrollX) + "px" 
      el.style.marginTop = "-" + ((el.clientHeight / 2) - scrollY) + "px"
  }
  var bigDiv;
  function showBig(id,ext) {
      bigDiv = document.getElementById("divBig");
      changeOpac(0);
      bigDiv.style.display = "block";
      document.getElementById("imgBig").src = "/images/swag-bucks/image" + id + "." + ext;
      centerElement(bigDiv);
      opacity(1, 100, 200);
  }
    
  function changeOpac(opacity) {
    bigDiv.style.opacity = (opacity / 100);
  	bigDiv.style.MozOpacity = (opacity / 100);
  	bigDiv.style.KhtmlOpacity = (opacity / 100);
  	bigDiv.style.filter = "alpha(opacity=" + opacity + ")";
  }
  
  function opacity(opacStart, opacEnd, millisec) {
	  var speed = Math.round(millisec / 100);
	  var timer = 0;
		for(i = opacStart; i <= opacEnd; i++) {
			setTimeout("changeOpac(" + i + ")",(timer * speed));
			timer++;
		}
	}