var xmlHttp
function showColum(columnist_cat){
	xmlHttp=GetXmlHttpObject()
if (xmlHttp==null) { alert ("Browser does not support HTTP Request"); return; }

var url="columnist/page_tmp.php"
url=url+"?colum_cat="+columnist_cat
//url=url+"?q="+str
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
document.getElementById('ColumnistHint').innerHTML = '<br><br><br><center><img src="http://www.dst.co.th/images/loader.gif" alt="DST Loading" /><br /><br /><b>Now Loading...</b><br /><br /><br /><br /></center>';
xmlHttp.send(null)
}

function stateChanged() 
{ if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ document.getElementById("ColumnistHint").innerHTML=xmlHttp.responseText } }

function GetXmlHttpObject() { var xmlHttp=null;
try {/*Firefox, Opera 8.0+, Safari */ xmlHttp=new XMLHttpRequest(); }
catch (e) { /*Internet Explorer*/ try { xmlHttp=new ActiveXObject("Msxml2.XMLHTTP"); }
catch (e) { xmlHttp=new ActiveXObject("Microsoft.XMLHTTP"); } } return xmlHttp;}