function showbuttons(){
var is_major=parseInt(navigator.appVersion); 
var agt=navigator.userAgent.toLowerCase();
var is_mac=(agt.indexOf("mac")!=-1);
var is_ie4up=((agt.indexOf("msie")!=-1)&&(is_major>=4));
var is_win31=((agt.indexOf("windows 3.1")!=-1)||(agt.indexOf("win16=")!=-1)||(agt.indexOf("windows 16-bit")!=-1));
if ((is_mac&&is_ie4up)||is_win31){
return "<BR><B>Press enter to recalculate</B>";
}
return "<FORM><INPUT TYPE='button' value='Calculate' Name='btnCallCalc' onClick='document.calculator.calculate()'><INPUT TYPE='button' value='View Report' Name='btnOpenNote' onClick='openNote()'></FORM>";
} 
function openNote() { 
var agt=navigator.userAgent.toLowerCase(); 
var is_aol=(agt.indexOf("aol")!=-1);
leftpos=0;
if (screen) {
leftpos=screen.width/2-300;
} 
if (is_aol){
var s=" ";
s=document.calculator.sJavaScriptReport('HTML');
document.write(s);
}else{
var OpenWindow=window.open("","newwin","toolbar=yes,menubar=yes,location=no,directories=no,status=no,scrollbars=yes,resizable=yes,copyhistory=no,width=600,height=380,left="+leftpos+",top=20");
var s=" ";
if(navigator.appName=="Netscape"){
s=document.applets["calculator"].sJavaScriptReport('HTML');
}else{
s=document.calculator.sJavaScriptReport('HTML');
}
OpenWindow.document.write(s);
OpenWindow.document.close(); 
OpenWindow.focus();
}
}