// JavaScript Document

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) };
	}
} 

//The following are for browsers like NS4 or IE5Mac which don't support either
//attachEvent or addEventListener
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 createCenterWindow(Url, WindowName, Features, W, H){	
		var top = 0 ;
		var left = 0 ;
		var hToWin = null ;
		
		if (screen.availWidth) left = (screen.availWidth/2) - (W/2)
		if (screen.availHeight) top = (screen.availHeight/2) - (H/2)
		
		FeaturesArray = Features.split(",") ;
		FeaturesArray[FeaturesArray.length] = "width=" + W ;
		FeaturesArray[FeaturesArray.length] = "height=" + H ;		
		FeaturesArray[FeaturesArray.length] = "top=" + top ;
		FeaturesArray[FeaturesArray.length] = "left=" + left ;
		hToWin = window.open('', WindowName, FeaturesArray.join(",")) ;
		try{hToWin.document.open(); hToWin.document.title='Loading...'; hToWin.document.close();}catch(err){}
		hToWin.location.href=Url;
		return hToWin;
}