var isMac = (navigator.appVersion.indexOf("Mac")!=-1) ? true : false;
function popCenterWin(w,h,url){
// width of the new window
var wWidth = w;
// height of the new window
var wHeight = h;
// window left position
var posL = (window.screen.availWidth - wWidth) / 2;
// window top position
var posT = (window.screen.availHeight - wHeight) / 2;
// see if extra param has passed in
if(arguments.length==4){
var extra = ',' + arguments[3];
}else{
var extra = "";
}
var newWin = window.open(url,"centreWindow",'width=' + wWidth + ',height=' + wHeight + ',top=' + posT + ',left=' + posL + extra);
newWin.focus();
}
function exactImgWin(imgPath,w,h){
// window width
var winW = (!isMac) ? w : w - 15;
// window height
var winH = (!isMac) ? h : h - 15;
// window left position
var posL = (window.screen.availWidth - winW) / 2;
// window top position
var posT = (window.screen.availHeight - winH) / 2;
// window content
var winContent = '\n\n\njw-jones.com\' Gallery\n\n\n
\n\n\n';
// window params
var winParams = 'width=' + winW + ',height=' + winH + ',top=' + posT + ',left=' + posL;
// srollbars and resizable?
if(arguments.length == 4){
winParams += ',scrollbars=1,resizable=1';
}
// create an unique window name
rn = new Date();
winName = rn.getHours();
winName = winName + '_' + rn.getMinutes();
winName = winName + '_' + rn.getSeconds();
// open window
fotoWin = window.open('', winName, winParams);
fotoWin.document.write(winContent)
fotoWin.focus();
}