var elem = "TR";
   var rClick;

 window.onload = function(){
  if(document.getElementsByTagName){
   var el = document.getElementsByTagName(elem);
    for(var i=0; i<el.length; i++){
     if(el[i].childNodes[0].tagName != "TH"
     && el[i].parentNode.parentNode.className.indexOf("tbl") != -1){
     if(i%2 == 1){
      el[i].className = "on";
      el[i].oldClassName = "on";
      el[i].onmouseout  = function(){
	     this.className = "on";
      }
    } else {
      el[i].className = "off";
      el[i].oldClassName = "off";
      el[i].onmouseout  = function(){
	     this.className = "off";
      }
    }
      el[i].onmouseover = function(){
	     if(this.className == this.oldClassName)
	       {this.className = "hover";}
      }
      el[i].onclick = function(){
       if(rClick){
        rClick.className=rClick.oldClassName;
        rClick.onmouseout = function(){this.className = this.oldClassName};
       }
        this.className = "click";
        rClick = this;
        this.onmouseout = function(){return true};
       }
    }
  }
 }
}