function open_window(url) {
mywin = window.open(url,"win",'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=2,resizable=1,width=540,height=400,top=0,left=0');
}

function open_window2(url) {
mywin = window.open(url,"win",'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=2,resizable=1,width=725,height=475,top=0,left=0');
}


<!-- 

function MM_openBRwindow(theURL,winName,features) { //v2.0 

window.open(theURL,winName,features); 

} 

//-->

<!-- Begin
function printWindow() {
bV = parseInt(navigator.appVersion);
if (bV >= 4) window.print();
}
//-->