//This JavaScript shows the previous set of clients in corresponding category
var XMLHttpRequestObject_2=false;
var clientFirstIdString=null;

function movePrevious()
{
	var previoustestimonial=document.getElementById("vacancies_display_table");
	var rowsArr=previoustestimonial.getElementsByTagName("tr");
	var rowCount=rowsArr.length;
	var FirstDiv=rowsArr[0];
	var firstId= FirstDiv.id;
//	alert("FirstId="+firstId);
	if(window.XMLHttpRequest)
	{
		XMLHttpRequestObject_2=new XMLHttpRequest();
	}
	else if(window.ActiveXObject)
	{
		XMLHttpRequestObject_2=new ActiveXObject("Microsoft.XMLHTTP");
	}
	if(XMLHttpRequestObject_2)
	{
		XMLHttpRequestObject_2.open("GET","query_vacancies.php?firstId="+firstId);
		XMLHttpRequestObject_2.onreadystatechange=function()
		{
			if(XMLHttpRequestObject_2.readyState==4 && XMLHttpRequestObject_2.status==200)
			{
				var ajaxResponseText=XMLHttpRequestObject_2.responseText;
				var testimonialprevious=document.getElementById("content_display");
				testimonialprevious.innerHTML=ajaxResponseText;
				testimonialFirstIdString=readFirstId();
				var targetPreviousDiv=document.getElementById("previousDiv");
				targetPreviousDiv.style.visibility="visible";
				hideUnhidePreviousVacanciesNavigation(testimonialFirstIdString)
			}						
		}
		XMLHttpRequestObject_2.send(null);
	}
}
function readFirstId()
{
	var targetHidden=document.getElementById("total_vacancies");
	var firstIdList=targetHidden.innerHTML;
	return firstIdList;
}