This is my first question, sorry If some of it is formatted incorrectly. I have been trying to make a tab of its own pop-up inside of another using bookmarklets on chrome, to be able act as its own search, unaffected by current extensions installed. So far I have been able to get the window to work, but there are instances where certain inputs will affect the tab behind it. Is there a way to isolate it, or give it focus over the other. Here is the code I already have that allows a window to open:

javascript:((function(){ var a,b,c;c="https://bing.com", b=document.createElement("iframe"), b.setAttribute("src",c),b.setAttribute("id","rusic-modal"), b.setAttribute("style","position: fixed; width: 100%; height: 100%; top: 0; left: 0; right: 0; bottom: 0; z-index: 99999999999; background-color: #fff;"), a=document.getElementsByTagName("body")[0], a.appendChild(b)})).call(this)