var xmlHttp
	
function showbcontents(cid,bid,mcd){ 
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null){
		alert ("Browser does not support HTTP Request")
		return
	}
		
	document.getElementById("txtbcontents").innerHTML="<center><table style ='margin-top:130px;margin-bottom:130px;'><tr><td><img src ='imgs/cloader.gif' alt ='Loading'/></td></tr><tr><td>Loading</td></tr></table></center>";
	
	var url="getbcontents.php"
	url=url+"?c_id="+cid
	url=url+"&b_id="+bid
	url=url+"&mnu="+mcd
	url=url+"&sid="+Math.random()
	xmlHttp.onreadystatechange=statebChanged 
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
}
	
function statebChanged() { 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){ 
		document.getElementById("txtbcontents").innerHTML=xmlHttp.responseText 
		} 

}