function openWin1(){ 
window.open("","subwin","scrollbars=yes,resizable=no,width=420,height=500"); 
} 


function openWin2(){ 
window.open("","subwin","scrollbars=yes,resizable=no,width=900,height=600"); 
} 

function openWin3(){ 
window.open("","subwin","scrollbars=no,resizable=no,width=400,height=610"); 
}