One can use postMessage but if everything lives on the same domain one can top.frames["left"] in stead of window and call functions or manipulate the dom. You

One can use postMessage but if everything lives on the same domain one can top.frames["left"] in stead of window and call functions or manipulate the dom. You had me play with framesets for a bit. document.write((function(){switch(window.name){ case "main": switch(location.search){ case "?foo": return `<base target="top"></head><body>Article text`; default: return `no article selected`; } case "menu": switch(location.search){ case "?bar": return `<base target="main"></head><body>List of <a></a>'s`; case "?youtube": return `<base target="main"></head><body><list of youtube.com/embed/ links`; default: return `please make your selection on the left`; } case "left": return `<base target="menu"></head><body> list of <a href="?youtube"> links`; default: return ` <frameset cols="15%,85%"> <frame name="left" src="index.html" /> <frameset rows="30%,70%"> <frame name="menu" src="index.html" /> <frame name="main" src="index.html" /> </frameset> </frameset>`; }})()); I laughed so hard writing that.