function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 // Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}



function hide_row(rowID) {
document.getElementById(rowID).style.display = "none";
}


function unhide(divID) {
  var item = document.getElementById(divID);
  if (item) {
    item.className=(item.className=='hidden')?'unhidden':'hidden';
  }
}


function choices(choice)
	{
var urlMusicChoices="choices.php?choice="+choice;

var xmlHttp=null;
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
  {
  alert ("Browser does not support HTTP Request")
  return
  } 

    xmlHttp.open('GET', urlMusicChoices, true);

    xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

	xmlHttp.onreadystatechange = function() {
        if (xmlHttp.readyState == 4) {
	
}
}

    xmlHttp.send(urlMusicChoices);

	}