var req;
var errs="";
function headCloseWindow(cid){
//cid - window containers id
	var wndObj=document.getElementById(cid);
	if(wndObj) wndObj.style.display="none";
}

function showSysMsg(txt, tm){
	var cid="sysMsgBlock";
	var wndObj=document.getElementById(cid);
	if(wndObj) {
		wndObj.innerHTML=txt;
		wndObj.style.display=txt?"block":"none";
	}
}

//===========================================================================================
//                                   Dinamic data loading functionality
//===========================================================================================

function loadXMLDoc(url) {
	if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
		req.onreadystatechange = processReqChange;
		req.open("GET", url, true);
		req.send(null);
	} else if (window.ActiveXObject) {
		req = new ActiveXObject("Microsoft.XMLHTTP");
		if (req) {
			req.onreadystatechange = processReqChange;
			req.open("GET", url, true);
			req.send();
		}
	}
}

function processReqChange() {
    if (req.readyState == 4) {
        if (req.status == 200){		
		printRes();
	 }else{
            alert("There was a problem retrieving the data:\n" + req.statusText);
	}
    }else{
    	errs+=req.readyState+"\n"
    }
}


// Dinamicaly loaded code parser
/*
function printRes(){
	var s=req.responseText;
	if(resultElm) resultElm.innerHTML=s;
	if(reqCol) reqCol=removeArrElm(reqCol, 0)
	if(reqCol) expandMRow(reqCol[0]);
}
*/