function tryCatch()
	{
	var xmlHttp;
	//For other browsers
	try
	{
	xmlHttp=new XMLHttpRequest();
	}

	catch (ex)
	{
	// For Internet Explorer
	try
	{
	xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	catch (ex)
	{
	alert("This browser does not support AJAX");
	return false;
	}
	}
	}