function visuallTours(windowURL,windowName,windowWidth,windowHeight,top,left) {
window.name = 'VirtualTours';
var w = 600, h = 300, leftPos = w/2, topPos = h/2;

if (window.screen) {
    w = 800;
    h = 300;
    leftPos = Math.floor((screen.availWidth-w)/2);
    topPos = Math.floor((screen.availHeight-h)/2);
}

newWindow = window.open(windowURL,windowName,'width='+w+',height='+h+',top='+topPos+',left='+leftPos+',toolbar=0,location=0,directories=0, status=0,menuBar=0,scrollBars=1,resizable=1');
newWindow.focus();
}