//    --------------------------    popup.js    --------------------------NN4=(document.layers)?true:false;
IE4=   (document.all)?true:false;
var bro=window.navigator.appName;
if (bro=="Netscape") {
	var ver=parseFloat(window.navigator.appVersion);
}else if (bro=="Microsoft Internet Explorer") {
	var ver=parseFloat(window.navigator.appVersion.substring(window.navigator.appVersion.indexOf('MSIE')+5,window.navigator.appVersion.length));
}

function openwin(windowurl,windowname,windowfeatures) {
        if (window.screen.availWidth>=640 && window.screen.availHeight>=480) {
    		window.open(windowurl,windowname,windowfeatures);
        }        else {
    		alert("Need more resolution.");
        }
		
}

function popupWindow_middlecenter(purl,pname,pwidth,pheight,dx,dy,pstr) {
//	var screenWidth=window.screen.width;
//	var screenHeight=window.screen.height;
	var availWidth=window.screen.availWidth;
	var availHeight=window.screen.availHeight;
	if (window.screen.availWidth>1600) {
		availWidth-=window.screen.availWidth/2;
	}    var px=(availWidth -pwidth )/2 + dx;
    var py=(availHeight-pheight)/2 + dy;
    PopupWindow_middlecenter =     window.open(purl,pname,'left='+px+',top='+py+',width='+pwidth+',height='+pheight+','+pstr+'');
	PopupWindow_middlecenter.focus();
}