//    --------------------------    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();

}