function delay(millis)
{
	var refDt = new Date();
	var curDate = null;

	do { var curDate = new Date(); }
	while(curDate - refDt < millis);
} 

function locker(uri, paramString){
		var httpReq = null;
		if (window.XMLHttpRequest) httpReq = new XMLHttpRequest();
		else if (window.ActiveXObject) httpReq = new ActiveXObject("Microsoft.XMLHTTP"); //IE/Windows ActiveX
		if (httpReq)
			{
			httpReq.open("POST",encodeURI(uri),true);
			httpReq.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
			httpReq.onreadystatechange=function() {
			   if (httpReq.readyState==4) {
				    var returnText=httpReq.responseText;
			   }
			}
			httpReq.send(paramString);
			delay(1500);
			return;
			}

		else return;
}