function searchvideos(tag) {
	var tagID = escape(tag);
	var headID = document.getElementsByTagName("head")[0];
	var newScript = document.createElement('script');
	newScript.type = 'text/javascript';
	newScript.src = 'http://gdata.youtube.com/feeds/api/videos?q=' + tagID + '&alt=json-in-script&max-results=16&callback=respuestav';   
	headID.appendChild(newScript);
  	document.getElementById('listavideos').innerHTML="<center>Cargando Videos...</center>"; 
	return false;  
}
function respuestav(data) {
  var feed = data.feed;
  var entries = feed.entry || [];
  var html = [''];
  var titulo;
  for (var i = 0; i < entries.length; i++) {
    var entry = entries[i];
    var title = entry.title.$t.substr(0, 33);
    titulo = remplasar(title);
    var thumbnailUrl = entries[i].media$group.media$thumbnail[0].url;
    var playerUrl = codeyt(thumbnailUrl);
    html.push('<div style="width:145px;height:115px; float:left;"><a style="font-size:12px;" href="http://videos.sonicomusica.com/video/'+playerUrl+'/'+titulo+'/" target="_blank"><img width="135" height="81" border="0" src="'+thumbnailUrl+'"/></a><div style="float:left;width:135px;text-align:center"><a style="font-size:12px;" href="http://videos.sonicomusica.com/video/'+playerUrl+'/'+titulo+'/" target="_blank">'+title+'</a></div></div>');
  }
  document.getElementById('listavideos').innerHTML = html.join('');
}
function codeyt(cadena){
	var arreglo = cadena.split('/');
	return(arreglo[4]);
}
function remplasar(cadena) {
	cadena=cadena.split(/[^A-Za-z0-9-]/).join("-"); 
	cadena=cadena.split("--").join("-"); 
	cadena=cadena.split("---").join("-"); 
	cadena=cadena.split("--").join("-");	
	return cadena;
}