function getXMLHTTP() 
{ 
  var XMLHTTP = false;
	try
	{
		if(navigator.userAgent.indexOf("Firefox")!=-1)
		{
			//Firefox
			XMLHTTP = new XMLHttpRequest();
			//alert("F");
		}
		else
		{
			//IE
			XMLHTTP=new ActiveXObject("Msxml2.XMLHTTP");
		//	request = new ActiveXObject("Msxml2.XMLHTTP");
	//alert("IE");
		}
	}
	catch (e)
	{
		try
		{
			XMLHTTP=new ActiveXObject("Microsoft.XMLHTTP");
			//	alert("Default");
		}
		catch(E)
		{
			XMLHTTP=false;
			//alert("false");
		}
			
	}
return XMLHTTP;
}
function changecolumn(count, caption, credit)
{	
	var x = document.getElementById("img"+count);	
	var y = document.getElementById("bigimg");
	y.setAttribute("src", x.src);
	var z = document.getElementById("cap");
	var c = document.getElementById("cred"+count);

	if(caption.length > 0 || credit.length > 0)
	{
		z.style.display='block';
		z.innerHTML = c.innerHTML;
	}
	else
	{
		z.style.display='none';
	}
	//document.write(c.innerHTML);	
								
}