I have an asp page that has a form to collect user data in a form.
when the user clicks submit the input is validated. If any fields are
not acceptable the user clicks on a button to go back to the original
form to correct the input. This all works fine until I try to
incorporate a javascript to display a popup calendar which posts the
selected date back to a field on the form. This script works fine in
itself, however if the page is submitted after this script has run and
other fields are not valid, then when I go back to the form ALL the
data entered is cleared. I am fairly new to asp and at a lost as to
what i am doing wrong.
I would appreciate any pointers as to how I can correct this.
My asp page is is follows:
<!-- #INCLUDE FILE="includes/Top.asp" --Handles database connects
<!-- #INCLUDE FILE="cal_inc.asp" --' contains the Javascript to
handle the popup window
<% If (0 = Request.ServerVariables("CONTENT_LENGTH")) Then %>
<FORM ACTION="<%=Request.ServerVariables("SCRIPT_NAME")% >" method= post
name = example_form><CENTER>
' VArious Input elements
<a href="javascript
:ShowDate('example_form','DATE');" >Pick Date</a'
hyperlink to javascript window to complete a field if required
' Validation of data input
<input type="button" value="Click here to make your changes"
onClick="history.go(-1) "' button to go back to original form if
invalid data found
The cal_inc.asp is :
<SCRIPT language="Javascript">
function ShowDate(date_form, date_field)
{
url='mc_calendar.asp?date_form=' + date_form + '&date_field=' +
date_field;
window.open(url,"_blank","height=200,width=370, resizable=yes");
}
</SCRIPT>
and the ='mc_calendar.asp page which it calls is :
<html>
<head>
<meta http-equiv="Content-Language" content="es-bo">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<title>Pick a calendar date...</title>
<SCRIPT language="Javascript">
function change_cal()
{
var today = new Date();
month=document.cal_form.sel_month.options[document.cal_form.sel_month.options.selectedIndex].value;
year=document.cal_form.sel_year.options[document.cal_form.sel_year.options.selectedIndex].value;
month_dif=month-(today.getMonth()+1);
year_dif=year-today.getYear();
url='mc_calendar.asp?sel_month=' + month + '&sel_year=' + year +
'&month_dif=' + month_dif
+ '&year_dif=' + year_dif + '&date_form=<% =request("date_form") %>'
+ '&date_field=<% =request("date_field") %>';
window.location=url;
}
function pick_date(s_day, s_month, s_year)
{
if (window.opener && !window.opener.closed)
{
window.opener.document.<% =request("date_form") %>.<%
=request("date_field") %>.value =s_day + "/" + s_month + "/" + s_year;
}
window.close();
}
</SCRIPT>
</head>
<body link="#008000" vlink="#008000" alink="#FF0000" topmargin="0"
leftmargin="0" rightmargin="0" bottommargin="0">
<table border="0" cellpadding="0" style="border-collapse: collapse"
id="table3">
<tr>
<td>
<% if request("sel_month")<>"" then
sel_month=request("sel_month")
else
sel_month=month(now)
end if
if request("sel_year")<>"" then
sel_year=request("sel_year")
else
sel_year=year(now)
end if
if request("month_dif")<>"" then
month_dif=cint(request("month_dif"))
else
month_dif=0
end if
if request("year_dif")<>"" then
year_dif=cint(request("year_dif"))
else
year_dif=0
end if
new_now=DateAdd("m",month_dif,now)
new_now=DateAdd("yyyy",year_dif,new_now)
'response.write("new_now: " & new_now & "<br>")
first_week_day=WeekDay( new_now- ( day(new_now)-1 ) )
'response.write("first weekday: " & first_week_day & "<br>")
if first_week_day=1 then
date_cursor=-7
else
date_cursor=(first_week_day-1)*-1
end if
'response.write("date cursor: " & date_cursor & "<br>")
first_show_day=day(new_now-(day(new_now)-1)+date_cursor)
'response.write("first show day: " & first_show_day & "<br>")
%>
<table border="3" id="table4" cellspacing="1">
<form name="cal_form">
<tr>
<td colspan="7">
<div align="left">
<table border="0" cellpadding="0" style="border-collapse:
collapse" id="table5">
<tr>
<td>
<p align="left"><font size="1" face="Arial
Narrow">
<a href="mc_calendar.asp?date_form=<% =request("date_form")
%>&date_field=<% =request("date_field") %>">GO<br>
TODAY</a> </font></td>
<td>
<p align="right"><b><font face="Verdana" color="#000080">
<% response.write(MonthName(sel_month)) %>
<% response.write(sel_year) %>
</font></b></td>
<td><font face="Verdana">
<select size="1" name="sel_month" onchange="javascript
:
change_cal();">
<% for i=1 to 12 %>
<option
<% if i=cint(sel_month) then %>
selected
<% end if %>
value="<% =i %>"><% response.write(MonthName(i)) %></option>
<% next %>
</select></font></td>
<td><font face="Verdana">
<select size="1" name="sel_year" onchange="javascript
:
change_cal();">
<% for i=1900 to 2100 %>
<option
<% if i=cint(sel_year) then %>
selected
<% end if %>
value="<% =i %>"><% =i %>
</option>
<% next %>
</select></font></td>
</tr>
</table>
</div>
</td>
</tr>
<tr>
<td align="center"><b><font face="Verdana" size="1"
color="#000080">Sunday</font></b></td>
<td align="center"><b><font face="Verdana" size="1"
color="#000080">Monday</font></b></td>
<td align="center"><b><font face="Verdana" size="1"
color="#000080">Tuesday</font></b></td>
<td align="center"><b><font face="Verdana" size="1"
color="#000080">
Wednesday</font></b></td>
<td align="center"><b><font face="Verdana" size="1"
color="#000080">Thursday</font></b></td>
<td align="center"><b><font face="Verdana" size="1"
color="#000080">Friday</font></b></td>
<td align="center"><b><font face="Verdana" size="1"
color="#000080">Saturday</font></b></td>
</tr>
<% for i=1 to 42 %>
<% if WeekDay(new_now-(day(new_now)-1)+date_cursor)=1 then
if i>1 then %>
</tr>
<% end if %>
<tr>
<% end if %>
<td>
<% if (date_cursor>=0 and date_cursor<=2) or (date_cursor>=3 and
date_cursor<=30 and day(new_now-(day(new_now)-1)+date_cursor)>3) then
%>
<p align="center">
<b>
<a href="javascript
:pick_date('<%
=day(new_now-(day(new_now)-1)+date_cursor) %>','<% =sel_month %>','<%
=sel_year %>');">
<% if month(now)=month(new_now) and
day(new_now)=day(new_now-(day(new_now)-1)+date_cursor) then
%>
<font face="Verdana" size="2" color="#FF0000">
<% else %>
<font face="Verdana" size="2" color="#008000">
<% end if %>
<% response.write( day(new_now-(day(new_now)-1)+date_cursor)
) %>
</font>
</a></b>
</p>
<% elseif date_cursor<0 or date_cursor>=28 then %>
<font face="Verdana" size="2" color="#C0C0C0">
<p align="center">
<b>
<% response.write( day(new_now-(day(new_now)-1)+date_cursor) )
%></b>
</p>
</font>
<% end if %>
</td>
<% date_cursor=date_cursor+1 %>
<% next %>
</form>
</table>
</td>
</tr>
<tr>
<td>
</td>
</tr>
</table>
</body>
</html>
