function _dom_toggle()
{return this;}
_dom_toggle.prototype.objref=function(id)
{return document.getElementById?document.getElementById(id):(document.all?document.all[id]:(document.layers?document.layers[id]:null));}
_dom_toggle.prototype.cancel_event=function()
{if(window.event)
{window.event.cancelBubble=true;}}
_dom_toggle.prototype.toggle=function(id,open_close_id,open_icon,close_icon)
{var object=this.objref(id);var icon=this.objref(open_close_id);if(object&&object.style)
{object.style.display=(object.style.display=='none')?'':'none';if(icon&&icon.src)
{icon.src=(object.style.display=='none')?open_icon:close_icon;}}
this.cancel_event();}
dom_toggle=new _dom_toggle();