function openwindow(url,winwidth,winheight){
  window.open(url,"","top=0,left=0,width="+winwidth+",height="+winheight)
}
function openwindow2(url,winwidth,winheight){
  window.open(url,"","scrollbars=yes,top=0,left=0,width="+winwidth+",height="+winheight)
}