Searching element text

http://stackoverflow.com/questions/13461171/using-jquery-with-a-user-script

HTML

<div id="tag">
<div id="d1" class="entry0">
    <a>hidden?</a>
</div>
<div id="d2" class="entry0">
    <a>xxxxx</a>
</div>
<div id="d4" class="entry0">
    <a>test</a>
</div>
</div>

JavaScript

/*var values = [];

$("#tag").children().each(function(n, i) {
 
  //alert(this.id[n]); 
   values = this.id;
});

//alert(values[0]+values[1]);

$('#'+values[0]+values[1]).css( "color","red" );
*/
alert($("#tag").children().id);