function ExploreOpening(dropdown, newWindow) {
  if (dropdown.selectedIndex > 0) {
  	var val = dropdown.options[dropdown.selectedIndex].value;
  	if (val != null && val.length > 0 && val.charAt(0) != '-') {
    	var url  = "http://chessflash.com/store?" + dropdown.options[dropdown.selectedIndex].value;
    	if (newWindow != null && newWindow == true) {
    		window.open(url, "mywindow");
    	} else {
    	  window.location.href = url;
    	}
    }
  }
  return true;
}

function makeEO(newWindow){
document.write('<form action=""><b>Chess Book Locator:</b><br><select name="books" onchange="ExploreOpening(this.form.books,' + newWindow + ');"><option value="-1">&lt;General Topics&gt;</option><option value="Beginners">Beginners</option><option value="Endgame">Endgame</option><option value="Middlegame">Middlegame</option><option value="Tactics">Tactics</option><option value="Openings">Openings (General)</option><option value="e4 Openings">e4 Openings</option><option value="d4 Openings">d4 Openings</option><option value="Unusual Openings">Unusual Openings</option><option value="-1">&lt;Specific Openings&gt;</option><option value="Alekhine">Alekhine</option><option value="Benko Gambit">Benko Gambit</option><option value="Benoni">Benoni</option><option value="Birds">Birds Opening</option><option value="Bishop\'s Opening">Bishop\'s Opening</option><option value="Caro-Kann">Caro-Kann</option><option value="Catalan">Catalan</option><option value="Colle">Colle</option><option value="Dutch">Dutch</option><option value="English">English</option><option value="French">French</option><option value="Four Knights">Four Knights</option><option value="Giuoco Piano">Giuoco Piano</option><option value="Grunfeld">Grunfeld</option><option value="King\'s Gambit">King\'s Gambit</option><option value="King\'s Indian Attack">King\'s Indian Attack</option><option value="King\'s Indian Defense">King\'s Indian Defense</option><option value="Modern Defense">Modern Defense</option><option value="Nimzo-Indian">Nimzo-Indian</option><option value="Nimzo-Larsen">Nimzo-Larsen</option><option value="Petroff">Petroff</option><option value="Pirc">Pirc</option><option value="Philidor">Philidor</option><option value="Queen\'s Gambit">Queen\'s Gambit</option><option value="Queen\'s Indian">Queen\'s Indian</option><option value="Reti">Reti</option><option value="Ruy Lopez">Ruy Lopez</option><option value="Scandinavian">Scandinavian</option><option value="Scotch Game">Scotch Game</option><option value="Sicilian">Sicilian</option><option value="Torre Attack">Torre Attack</option><option value="Vienna Game">Vienna Game</option><option value="Veresov">Veresov</option></select></form>');
}