gistfile1.js

function getVideoContent() { 
	var metas = document.getElementsByTagName('meta'); 

   	for ( var i = 0; i < metas.length; i++ ) { 
   		if ( metas[i].getAttribute("http-equiv") == 'Content-Language' ) { 
        		return metas[i].getAttribute("content"); 
      		} 
   	} 

    return '';
}