winWidth = 1024; // sets a default width for browsers who do not understand screen.width below
winheight = 768; // ditto for height

if (screen){ // weeds out older browsers who do not understand screen.width/screen.height
winWidth = screen.width;
winHeight = screen.height;
}

// this function calls a popupWindow where
// win is the page address i.e. '../page.htm'

function popupWindow(win){

newWindow = window.open(win,'newWin','fullscreen=yes,titlebar=no,toolbar=no,location=no,scrollbars=yes,resizable= no,width='+winWidth+',height='+winHeight+',left=0,top=0');
newWindow.focus();
}