function openWindow(url,width,height,scrollbars){
SizeableWindow = window.open(url,"popup","toolbar=0,location=0,directories=0,statusbar=0,menubar=0,scrollbars="+scrollbars+",resizable=0,width="+width+",height="+height);
}

SIDETAB = {
  choices: function(url) {
	   var tab_options = {}
    this.choices_url = url;
    this.tab_options = tab_options ? tab_options : {};
    /*this.tab_options.placement = this.tab_options.placement ? this.tab_options.placement : 'left';
    this.tab_options.color = this.tab_options.color ? this.tab_options.color : '#222'; */       
    this.tab_html = '<a href="#" id="sidetab_tab" class="sidetab_tab_right" style="background-color:#000000">choices</a>';
    this.overlay_html = '<div id="sidetab_overlay" style="display:none">' +
                          '<div id="sidetab_container">' +
                            '<a href="#" onclick="SIDETAB.hide();return false" id="sidetab_close">X</a>' +
                            '<iframe src="" id="sidetab_iframe" allowTransparency="true" scrolling="no" frameborder="0"></iframe>' +
                          '</div>' +
                          '<div id="sidetab_screen"></div>' +
                        '</div>';
                        
    if(this.tab_options.container) {
      var container_el = this.gId(this.tab_options.container);
      container_el.innerHTML = this.tab_html + this.overlay_html;
    } else {
      document.write(this.tab_html);
      document.write(this.overlay_html);      
    }                   

    this.gId('sidetab_tab').onclick = function() { SIDETAB.show(); return false; }
    this.gId('sidetab_iframe').setAttribute("src", "");
  },
  set_position: function() {
    this.scroll_top = document.documentElement.scrollTop || document.body.scrollTop;
    this.scroll_height = document.documentElement.scrollHeight;
    this.client_height = window.innerHeight || document.documentElement.clientHeight;
    this.gId('sidetab_screen').style.height = this.scroll_height+"px";
    this.gId('sidetab_container').style.top = this.scroll_top+(this.client_height*0.1)+"px";
  },
  show: function() {
    if(this.gId('sidetab_iframe').getAttribute("src") == "") {
      this.gId('sidetab_iframe').setAttribute("src", this.choices_url);
    }
    this.set_position();
    this.gId('sidetab_overlay').style.display = "block";
  },
  hide: function() {
    this.gId('sidetab_overlay').style.display = "none";
  },
  gId: function(id) {
    return document.getElementById(id);
  }
}