function ajaxFunction()
{
	var xmlHttp;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		 // Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			try
  			{
  				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  			}
			catch (e)
  			{
  				alert("Your browser does not support AJAX!");
  				return false;
  			}
		}
	}
	return xmlHttp;
}