Javascript function in ASP.Net

[chinki]

I'm facing a problem in form related to employee Leave which has two asp controls with calendar image which is built in javascript as,

<asp:textbox id="txtlsdate" runat="server" AutoPostBack="True">
</asp:textbox>
<IMG onclick="javascript:popUpCalendar(this,txtlsdate,' dd-mmm-yyyy');" src="images/calendar/calendar.gif">

<asp:textbox id="txtledate" runat="server" AutoPostBack="True">
</asp:textbox>
<IMG onclick="javascript:popUpCalendar(this,txtledate,' dd-mmm-yyyy');" src="images/calendar/calendar.gif">
Whenever i click on this image and the value of textbox gets changed i want the difference in between the values of date gets calculated and stored in another textbox named "txtTotalLeave"

For this i've written a javascript function as below:
<script language="javascript" src="popcalendar.js" type="text/javascript">
function calc(available,quantity,answer)
{
var var_available = document.getElementById(available);
*var var_quantity = document.getElementById(quantity) ;
*window.alert("hi.........");
*if ( var_available.value == '2' || var_available.value == '7' )
*{*
*
* document.getElementById(answer).value=var_availabl e.value + var_quantity.value;
* window.alert('Error');
***return false;
**}
**return true;
}
</script>

[chinki]

I'm facing a problem in form related to employee Leave which has two asp controls with calendar image which is built in javascript as,

<asp:textbox id="txtlsdate" runat="server" AutoPostBack="True">
</asp:textbox>
<IMG onclick="javascript:popUpCalendar(this,txtlsdate,' dd-mmm-yyyy');" src="images/calendar/calendar.gif">

<asp:textbox id="txtledate" runat="server" AutoPostBack="True">
</asp:textbox>
<IMG onclick="javascript:popUpCalendar(this,txtledate,' dd-mmm-yyyy');" src="images/calendar/calendar.gif">
Whenever i click on this image and the value of textbox gets changed i want the difference in between the values of date gets calculated and stored in another textbox named "txtTotalLeave"

For this i've written a javascript function as below:

<script language="javascript" src="popcalendar.js" type="text/javascript">
function calc(txtlsdate,txtledate,txtTotalLeave)
{
var var_1 = document.getElementById(txtlsdate);
var var_2 = document.getElementById(txtledate) ;
document.getElementById(txtTotalLeave).value=var_1 .value + var_2.value;
}
</script>

I'm calling this function from page_load event of my codebehind file.

btnadd.Attributes.Add("onclick", "javascript: checkall('" + txtlsadate.ClientID + "', '" + txtledate.ClientID + "', '" + txttotalleave.ClientID + "');")

This function is not working and i don't know whats wrong with it?

[chinki]

I'm facing a problem in form related to employee Leave which has two asp controls with calendar image which is built in javascript as,

<asp:textbox id="txtlsdate" runat="server" AutoPostBack="True">
</asp:textbox>
<IMG onclick="javascript:popUpCalendar(this,txtlsdate,' dd-mmm-yyyy');" src="images/calendar/calendar.gif">

<asp:textbox id="txtledate" runat="server" AutoPostBack="True">
</asp:textbox>
<IMG onclick="javascript:popUpCalendar(this,txtledate,' dd-mmm-yyyy');" src="images/calendar/calendar.gif">
Whenever i click on this image and the value of textbox gets changed i want the difference in between the values of date gets calculated and stored in another textbox named "txtTotalLeave"

For this i've written a javascript function as below:

<script language="javascript" src="popcalendar.js" type="text/javascript">
function calc(txtlsdate,txtledate,txtTotalLeave)
{
var var_1 = document.getElementById(txtlsdate);
var var_2 = document.getElementById(txtledate) ;
document.getElementById(txtTotalLeave).value=var_1 .value + var_2.value;
}
</script>

I'm calling this function from page_load event of my codebehind file.

btnadd.Attributes.Add("onclick", "javascript: checkall('" + txtlsadate.ClientID + "', '" + txtledate.ClientID + "', '" + txttotalleave.ClientID + "');")

This function is not working and i don't know whats wrong with it?

[acoder]

Three threads merged. Do not triple post.