javascript - Add overlay pointer to an popup window in Extjs 4? -

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i want add arrow mark extjs window marked below. have created window required form fields , can point out place user clicked. requirement add arrow window.

thanks in advance.

enter image description here

<div id="overlay"> hello world </div>  #overlay {     width: 200px;     height: 50px;     position:relative;     background-color: green; } #overlay:after  {     content: "";     position: absolute;     top: 50px;     left: 50px;     width: 0px;     height: 0px;     border-top: 10px solid green;     border-left: 10px solid transparent;     border-right: 10px solid transparent; }

the div after overlay looking this. in same way can add overlay sencha extjs window.

enter image description here


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