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="T rue">
</asp:textbox>
<IMG onclick="javasc ript:popUpCalen dar(this,txtlsd ate,'dd-mmm-yyyy');" src="images/calendar/calendar.gif">

<asp:textbox id="txtledate" runat="server" AutoPostBack="T rue">
</asp:textbox>
<IMG onclick="javasc ript:popUpCalen dar(this,txtled ate,'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 "txtTotalLe ave"

For this i've written a javascript function as below:
<script language="javas cript" src="popcalenda r.js" type="text/javascript">
function calc(available, quantity,answer )
{
var var_available = document.getEle mentById(availa ble);
*var var_quantity = document.getEle mentById(quanti ty) ;
*window.alert(" hi.........");
*if ( var_available.v alue == '2' || var_available.v alue == '7' )
*{*
*
* document.getEle mentById(answer ).value=var_ava ilable.value + var_quantity.va lue;
* window.alert('E rror');
***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="T rue">
</asp:textbox>
<IMG onclick="javasc ript:popUpCalen dar(this,txtlsd ate,'dd-mmm-yyyy');" src="images/calendar/calendar.gif">

<asp:textbox id="txtledate" runat="server" AutoPostBack="T rue">
</asp:textbox>
<IMG onclick="javasc ript:popUpCalen dar(this,txtled ate,'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 "txtTotalLe ave"

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

<script language="javas cript" src="popcalenda r.js" type="text/javascript">
function calc(txtlsdate, txtledate,txtTo talLeave)
{
var var_1 = document.getEle mentById(txtlsd ate);
var var_2 = document.getEle mentById(txtled ate) ;
document.getEle mentById(txtTot alLeave).value= var_1.value + var_2.value;
}
</script>

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

btnadd.Attribut es.Add("onclick ", "JavaScript : checkall('" + txtlsadate.Clie ntID + "', '" + txtledate.Clien tID + "', '" + txttotalleave.C lientID + "');")

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="T rue">
</asp:textbox>
<IMG onclick="javasc ript:popUpCalen dar(this,txtlsd ate,'dd-mmm-yyyy');" src="images/calendar/calendar.gif">

<asp:textbox id="txtledate" runat="server" AutoPostBack="T rue">
</asp:textbox>
<IMG onclick="javasc ript:popUpCalen dar(this,txtled ate,'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 "txtTotalLe ave"

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

<script language="javas cript" src="popcalenda r.js" type="text/javascript">
function calc(txtlsdate, txtledate,txtTo talLeave)
{
var var_1 = document.getEle mentById(txtlsd ate);
var var_2 = document.getEle mentById(txtled ate) ;
document.getEle mentById(txtTot alLeave).value= var_1.value + var_2.value;
}
</script>

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

btnadd.Attribut es.Add("onclick ", "JavaScript : checkall('" + txtlsadate.Clie ntID + "', '" + txtledate.Clien tID + "', '" + txttotalleave.C lientID + "');")

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

[acoder]

Three threads merged. Do not triple post.