var txtTheURL
var newWindow = null
var nSize

function openwindow(txtTheURL , nSize ){ 
closeNewWindow() 
 newWindow = window.open(txtTheURL,"games","screenX=0,screenY=0,toolbar=no,location=no,directories=no,status=no,scrollbars=no,menubar=no,resizable=no,fullscreen=no," + nSize)

newWindow.focus()
//width=512,height=425
}

function closeNewWindow(){
 if(newWindow != null){
//alert() 
newWindow.close()
}
}