function _newpage (URLStr) {
  myWin= open(URLStr,"",
    "height=550,width=800,status=no,scrollbars=yes,toolbar=no,menubar=no,resizable");
		
}

function _onclick(URLStr) {
  myWin= open(URLStr,"", 
    "width=400,height=250,status=no,toolbar=no,menubar=no,top=300,left=300");
}