algo asi ?
    
Código HTML:
Ver original- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
- <html xmlns="http://www.w3.org/1999/xhtml"> 
- <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 
- <script type="text/javascript"> 
- function appendCountry(country) { 
-     var elTextarea = document.getElementById("el-textarea"); 
-     elTextarea.value += country; 
- } 
-     <img src="http://static.ajedrezweb.net/app/img/chess/flags/ES.png" onclick="javascript:appendCountry('&españa;');" style="cursor:pointer;"/> 
-     <img src="http://static.ajedrezweb.net/app/img/chess/flags/AR.png" onclick="javascript:appendCountry('&argentina;');" style="cursor:pointer;"/>