function AttachEvent(obj,evt,fnc,useCapture){
		if(!useCapture) useCapture=false;
		if(obj.addEventListener){
			obj.addEventListener(evt,fnc,useCapture);
			return true;
		} else if(obj.attachEvent) return obj.attachEvent("on"+evt,fnc);
		else{
			MyAttachEvent(obj,evt,fnc);
			obj['on'+evt]=function(){ MyFireEvent(obj,evt) };
		}
}

function MyAttachEvent(obj,evt,fnc){
		if (!obj.myEvents) obj.myEvents={};
		if (!obj.myEvents[evt]) obj.myEvents[evt]=[];
		var evts = obj.myEvents[evt];
		evts[evts.length]=fnc;
}

function MyFireEvent(obj,evt){
		if (!obj || !obj.myEvents || !obj.myEvents[evt]) return;
		var evts = obj.myEvents[evt];
		for (var i=0,len=evts.length;i<len;i++) evts[i]();
}

function GetXmlHttpObject(){
	var objXMLHttp=null;
	if(window.XMLHttpRequest){
		objXMLHttp=new XMLHttpRequest();
	}
	else if(window.ActiveXObject){
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
	}	
	return objXMLHttp;
}

function removeChildNodes(element){
	while(element.childNodes[0]){
    	element.removeChild(element.childNodes[0]);
	}
}