Messagebox prints out all no matter what

Hi

The first condition in red, in the function keeps printing out whether the condition is true or not – ie it prints out “you must select a date first” whether there is an active session called “left” or not.

How can I make it print this message [U]only[/U] if there is no session active called “left”. I am using ASP code, with a form activating the function later in the page, “onsubmit”.

Thanks

<script language=”JavaScript”>
function emptyselectbox1()
{
var messagebox = “”;

[COLOR=”Red”]if (“<%=Session(“left”)%>”!==true)
{
messagebox+= “You must select a date first n”;
}[/COLOR]

if (document.form3.checkIfClientEmpty.value.length<1)
{
messagebox+= “You must select a Client ID from the System first n”;
}

if (!(document.form3.select3.length>0))
{
messagebox += “There are no appointment times available n”;
}

if (document.form3.checkIfPatientEmpty.value.length<1)
{
messagebox+= “You must select a Patient ID from the System first n”;
}

if(messagebox.length>0)
{
alert(messagebox)
return false;
}
else
{
return true;
}
}
</script>

I also tried saving the session as a variable for javascript to use, like this

var messagebox = “”;

var thisID =”<%=Session(“left”)%>”

if (thisID!==true)
{
messagebox+= “You must select a date first n”;
}

but it still prints.

Also in #JavaScript _↴