// JavaScript Document
function classTables(classe, hover){
                 var tabelas=document.getElementsByTagName("table")
                     for(var x in tabelas)
                         if(tabelas[x].className==classe){
                          var tr=tabelas[x].getElementsByTagName("tr")
                              for(var y in tr){
                                   tr[y].onmouseover=function(){
                                   var td=this.getElementsByTagName("td")
                                       for(var z in td)
                                       td[z].className=hover
                                  }
                                   tr[y].onmouseout=function(){
                                    var td=this.getElementsByTagName("td")
                                        for(var z in td)
                                        td[z].className=""
                                   }
                              }


                         }
                
                }
                window.onload=function(){classTables("tabelaOpcoes", "hover")}