Whats wrong with this code?...

<script language="JavaScript">

function searchForAll(theForm)

{

//first if date has value and userid is null

if((theForm.date.value != "") && (theForm.useridsel[theForm.useridsel.selectedIndex].value == "null"))

{document.write("The date value is "+theform.date.value);

strUrl = "Files1.asp?dt="+theForm.date.value;

location.href = strUrl;

}

}

//second if date has no value and userid has a value

else if((theForm.date.value == "") && (theForm.useridsel[theForm.useridsel.selectedIndex].value != "null"))

{

document.write("The date value is "+theform.date.value);

strUrl = "Files2.asp?uid="+theForm.useridsel[theForm.useridsel.selectedIndex].value;

location.href = strUrl;

}

}

// third if date and userid both have values

else if((theForm.date.value != "") && (theForm.useridsel[theForm.useridsel.selectedIndex].value != "null"))

{

document.write("The date value is "+theform.date.value+"and the user id is "+theform.useridsel[theform.useridsel.selectedindex].value);

dataValue = theForm.date.value;

selectedUserid = theForm.useridsel[theForm.useridsel.selectedIndex].value;

strUrl = "Files1.asp?uid="+selectedUserid+"&dt="+dataValue;

location.href = strUrl;

}

}

// if date and userid both have no value

else if((theForm.date.value == "") && (theForm.useridsel[theForm.useridsel.selectedIndex].value == "null"))

{

document.write("The date value is "+theform.date.value,"+the user id "+theform.useridsel[theform.useridsel.selectedindex].value);

strUrl = "adminDownloadFiles.asp?dt=";

location.href = strUrl;

}

}

}

</script>

<form name="frm" method="post" action="">

<table width="100%" border="0" cellspacing="0" cellpadding="2">

<tr>

<td width="10%"><b>UserId:</b></td>

<td width="20%">

<select name="useridsel" >

<option value="null">All</option>

<option value="1" >Akshara</option>"

</select>

</td>

<script language="javaScript">

t = 0;

strState = "<%=trim(M_UserId)%>";

for (i=0;i<document.frm.useridsel.length;i++)

if(document.frm.useridsel.value == strState) t=i;