var xmlhttp;

function new_acqui(year)
{
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	  {
		  alert ("Browser does not support HTTP Request");
		  return;
	  }

	var url="getAcquistion.php?year="+year;
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}

function old_acqui(year)
{
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	  {
		  alert ("Browser does not support HTTP Request");
		  return;
	  }

	var url="getAcquistionOld.php?year="+year;
	xmlhttp.onreadystatechange=stateChanged1;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}


function stateChanged()
{
	if (xmlhttp.readyState==4)
	{
		document.getElementById("newslist").innerHTML=xmlhttp.responseText;
		getYear1(1);
	}
}

function getYear1(page)
{
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	  {
		  alert ("Browser does not support HTTP Request");
		  return;
	  }

	var url="getYear.php?page="+page;
	xmlhttp.onreadystatechange=stateChanged2;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}


function stateChanged2()
{
	if (xmlhttp.readyState==4)
	{
		document.getElementById("yearList").innerHTML=xmlhttp.responseText;
	}
}

function stateChanged1()
{
	if (xmlhttp.readyState==4)
	{
		document.getElementById("oldAcq").innerHTML=xmlhttp.responseText;
	}
}


function toggleView ( identifier )
{
	var element = document.getElementById(identifier);
	if ( element !== undefined )
	{
		if ( element.style.display === 'block' )
		{
			element.style.display = 'none';
		}
		else
		{
			element.style.display = 'block';
		}
	} 
}

function GetXmlHttpObject()
{
	if (window.XMLHttpRequest)
	  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
		  return new XMLHttpRequest();
	  }
	if (window.ActiveXObject)
	  {
  // code for IE6, IE5
	  return new ActiveXObject("Microsoft.XMLHTTP");
	  }
	return null;
}