var DynamicInvoiceLinesBehavior = Behavior.create({

  initialize: function(){
    this.disableClick = false;
    this.disableHover = false;
    this.contentShowed = false;
    this.element.behavior = this;
  },

  onclick: function(event){
    if(this.disableClick){
      alert("Another line is active.\nClose it first to view another line");
      return;
    }
    if(this.contentShowed){
      this.enableOnhoverElement();
      this.element.up("tbody").select("tr.invoice-line").each(function( e ){
        e.behavior.enableOnclickElement();
        e.removeClassName("disable");
      });
      this.contentShowed = false;
      this.element.next().down("td.line_details").remove();
    }
    else{
      this.disableOnhoverElement();
      this.disableElement("tr.invoice-line");
      this.element.down("a.show-line").onclick();
      this.contentShowed = true;
    }
  },

  disableElement: function(stringElement){
    this.element.up("tbody").select(stringElement).each(function( e ){
      if( e.id != this.element.id ){
        e.behavior.disableOnclickElement();
        e.addClassName("disable");
      }
    }.bind(this));
  },

  disableOnhoverElement: function(){
    this.disableHover = true;
  },

  enableOnhoverElement: function(){
    this.disableHover = false;
  },

  disableOnclickElement: function(){
    this.disableClick = true;
  },
  enableOnclickElement: function(){
    this.disableClick = false;
  }

});