// general ajax

function createRequestObject(){
	var request_o; //declare the variable to hold the object.
	if(isOpera){
		request_o = new XMLHttpRequest();
	} else if(isIE){
		/* Create the object using MSIEs method */
		request_o = new ActiveXObject("Microsoft.XMLHTTP");
	} else {
		/* Create the object using other browsers method */
		request_o = new XMLHttpRequest();
	}
	return request_o; //return the object
}