Selenium locate <textbox> nested in <table td> - selenium

Question

i want to select the specific textbox from a form based on its id attribute using selenium.
I tried this below code but its showing "unable to locate id..." error.
WebDriverWait waitt = new WebDriverWait(driver, 120);
waitt.until(ExpectedConditions.visibilityOfElementLocated(By.id("leadCaptureList_leadCapture_firstName")));
WebElement query = driver.findElement(By.xpath("//* [#id='leadCaptureList_leadCapture_firstName']"));`
and also i tried like WebElement textbox = driver.findElement(By.id("leadCaptureList_leadCapture_firstName")); but still no luck.
Is there anything in selenium to select nested textbox element ?
http://my.jetscreenshot.com/demo/20140304-c1dk-105kb.jpg (Press CTRL + to zoom image)
Here(in image) is the html structure of my page.
In this image i have highlighted the textbox for which i am trying to target.
html code as suggested in comment below
<table id="page-container" border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr>
<td id="page-header">
<div id="top">
<div id="page-title" class="limiter clear-block">
<div id="header-top">
<div id="logo"><img id="logo-image" alt="Home" src="images/logo.png"></div>
<div id="header-right">
<div id="block-ad" class="block block-ad">
<div class="block-content clear-block ">
</div>
</div>
<div id="header-links">
<!-- added table for structure -->
<table style="display:block; float:right;" class="norubik" border="0" cellpadding="1" cellspacing="0" width="100%">
<tbody><tr>
<td align="center"><font color="#666">My Account | <a style="color: red;font-size:10px;font-family:Verdana;color:#666;text-decoration: none" href="/logout">Logout</a></font></td>
</tr>
<tr>
<td align="center">
<span class="username"><!--Logged in as--> <strong>admin</strong>
<!-- Code for image -->
<div style="position:relative; top:2px; left:0px;">
<img src="images/premier_small.png">
</div>
</span>
</td>
</tr>
</tbody></table>
</div>
</div>
</div>
<div style="width: 100%; clear: both; text-align: left; margin-bottom: 6px; height:30px;">
<!-- begin menu div -->
<div class="AJXCSSMenuGdPbSLD"><!-- AJXFILE:ajxmenu.css -->
<div class="ajxmw">
<div class="ajxmw2">
<ul>
<li style="position: static;" class=""><a class="ajxsub" href="/" title="Home"><b>Home</b>
</a>
<div style="display: none;" class="ajxdd">
<div class="ajxsbg">
</div>
</div>
</li>
<li style="position: static;" class=""><a class="ajxsub" href="/node/3111" title="Getting Started"><b>Getting Started</b>
</a>
</li>
<li style="position: static;" class=""><a class="ajxsub" href="/node/2962" title="Training"><b>Training</b>
</a>
<div style="display: none;" class="ajxdd">
<div class="ajxsbg">
<ul>
<li style="position: static;" class=""><a class="ajxsub" href="/faq" title="FAQ">FAQ</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/node/3431" title="Video Tutorials">Video Tutorials</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/node/3138" title="Training Webinars">Training Webinars</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/pub/training-schedule" title="Training Schedule">Training Schedule</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/node/3735" title="Internet Marketing Webinars">Internet Marketing Webinars</a></li>
</ul>
</div>
</div>
</li>
<li style="position: static;" class=""><a class="ajxsub" href="/reseller/ir/leadCaptureList" title="Leads"><b>Leads</b>
</a>
</li>
<li style="position: static;" class=""><a class="ajxsub" href="/node/2964" title="Affiliate"><b>Affiliate</b>
</a>
</li>
<li style="position: static;" class=""><a class="ajxsub" href="/catalog/179" title="Store"><b>Store</b>
</a>
<div style="display: none;" class="ajxdd">
<div class="ajxsbg">
<ul>
<li style="position: static;" class=""><a class="ajxsub" href="/catalog/179" title="Memberships">Memberships</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/catalog/219" title="Marketplace">Marketplace</a></li>
</ul>
</div>
</div>
</li>
<li style="position: static;" class=""><a class="ajxsub" href="/" title="Resources"><b>Resources</b>
</a>
<div style="display: none;" class="ajxdd">
<div class="ajxsbg">
<ul>
<li style="position: static;" class=""><a class="ajxsub" href="/node/3017" title="Support">Support</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/reseller/calendar" title="Calendar/Events">Calendar/Events</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/node/3440" title="Documents">Documents</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/node/17" title="Documents">Documents</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/reseller/ir/contactInfo" title="Upline Report">Upline Report</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/node/3353" title="Feature Comparison">Feature Comparison</a></li>
<li style="position: static;" class=""><a class="ajxsub" href="/node/3497" title="Developer (API)">Developer (API)</a></li>
</ul>
</div>
</div>
</li>
</ul>
</div>
</div>
</div>
<!-- end menu div --></div>
</div>
<div id="branding">
<div class="limiter clear-block">
<div class="breadcrumb clear-block"><span class="breadcrumb-link">LeadOutcome</span> <span class="breadcrumb-link">Leads</span> <span class="breadcrumb-link">Manage Leads</span> </div>
</div>
</div>
</div>
</td>
</tr>
<tr>
<td id="content-container">
<div id="page" class="clear-block page-content">
<div id="content">
<div class="content-wrapper clear-block">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr>
<td class="bhdr-container"><span class="bhdr"> Manage Leads </span></td>
</tr>
</tbody></table>
<span style="color: blue; font-weight: bold"></span>
<span style="color: red; font-weight: bold"></span>
<form id="leadCaptureList" name="leadCaptureList" action="leadCaptureList.action" method="post">
<div><input name="advanceSearchClicked" value="No" id="advanceSearchClicked" type="hidden">
</div><table class="wwFormTable">
<input name="leadsToTransfer" value="" id="leadsToTransferId" type="hidden">
<input name="deleteids" value="" id="leadCaptureList_deleteids" type="hidden">
<input name="leadOrIR" value="Lead" id="leadCaptureList_leadOrIR" type="hidden">
<input name="savedSearchCriteria.searchName" value="" id="leadCaptureList_savedSearchCriteria_searchName" type="hidden">
<input name="savedSearchCriteria.published" value="" id="leadCaptureList_savedSearchCriteria_published" type="hidden">
<input name="leadSearchName" value="" id="leadCaptureList_leadSearchName" type="hidden">
<input name="cfValuesFromSessOrDB" value="false" id="leadCaptureList_cfValuesFromSessOrDB" type="hidden">
</table><table class="hdr-section-search" border="0" cellpadding="0" cellspacing="0">
<tbody><tr>
<td> </td>
</tr>
<tr>
<td>
<table style="background-color: #F8F8F8" class="conbox4" border="0" cellpadding="2" cellspacing="0" width="100%">
<tbody><tr>
<th colspan="4"><font size="2">Search Options (Search criteria can be combined)</font></th>
<th colspan="6" align="right">
<select id="currentlyOwnedLeads" name="currentlyOwnedLeads">
<option value="All">All leads </option>
<option value="No">Show all leads ever owned by me </option>
<option value="Yes">Show only leads currently owned by me </option>
</select>
<input name="" value="All" id="currentlyOwnedIdUsedForJavascript" type="hidden">
<input name="coForManageLeads" id="selectedSalesRepCo" value="" type="hidden">
<input name="id" value="" id="leadCaptureList_id" type="hidden"> Sales Rep: <span id="selectedIrCompany"></span> <img src="images/btn_find_IR.png" border="0"></th>
<th colspan="3" align="center">
<span onmousemove="ddrivetip(receiveSummaryMouseover,150)" onmouseout="hideddrivetip()">Receive Lead Summary:<select name="receiveLeadManagementSummaryEmails" id="summaryMailsField" onchange="setReceiveLeadManagementSummaryEmails();">
<option value="false">No</option>
<option value="true" selected="selected">Yes</option>
</select>
</span>
</th>
</tr>
<tr>
<td align="right">Lead Id:</td>
<td><input name="leadIdForSearch" maxlength="7" value="" id="leadCaptureList_leadIdForSearch" style="width:80px" type="text"></td>
<td align="right">First Name:</td>
<td><input name="leadCapture.firstName" value="test Lo" id="leadCaptureList_leadCapture_firstName" style="width:80px" type="text"></td>
<td align="right">Last Name:</td>
<td><input name="leadCapture.lastName" value="" id="leadCaptureList_leadCapture_lastName" style="width:80px" type="text"></td>
<td align="right">Email:</td>
<td><input name="leadCapture.email" value="" id="leadCaptureList_leadCapture_email" style="width:80px" type="text"></td>
<td align="right">Phone No.:</td>
<td><input name="leadCapture.phone" value="" id="phoneNo" style="width:80px" type="text"></td>
<td align="right">Status:</td>
<td><select name="leadCapture.status" id="leadCaptureList_leadCapture_status">
<option value="">-- Select Status --</option>
<option value="New">New</option>
<option value="Converted">Converted</option>
</select>
</td>
</tr>
<tr id="advancedSearchRow1" style="display: none">
<td align="right">Company:</td>
<td><input name="leadCapture.company" value="" id="leadCaptureList_leadCapture_company" style="width:80px" type="text"> </td>
<td align="right">Address:</td>
<td><input name="leadCapture.address" value="" id="leadCaptureList_leadCapture_address" style="width:128px" type="text"></td>
<td align="right">City:</td>
<td><input name="leadCapture.city" value="" id="leadCaptureList_leadCapture_city" style="width:122px" type="text"></td>
<td align="right">State:</td>
<td><select name="leadCapture.state" id="leadCaptureList_leadCapture_state">
<option value="">-- Select State --</option>
<option value="AK">Alaska</option>
</select>
</td>
<td align="right">Zip Code:</td>
<td><input name="leadCapture.zip" value="" id="leadCaptureList_leadCapture_zip" style="width:80px" type="text"></td>
</tr>
<tr id="advancedSearchRow2" style="display: none">
<td align="right">Lead History:</td>
<td><input name="leadCapture.leadHistory" value="" id="leadCaptureList_leadCapture_leadHistory" style="width:80px" type="text"></td>
<td align="right">Category:</td>
<td><select name="leadCapture.leadCategory.id" id="leadCategorySearch1" style="width:122px">
<option value="0" selected="selected">All Leads</option>
<option value="2">Business Leads</option>
<option value="200">Webinar Follow up 12/4</option>
</select>
</td>
<td align="right">Custom Field Type:</td>
<td><select name="leadCapture.leadTypeObj.id" id="leadTypeId" style="width:122px" onclick="disableLeadType()" onchange="showCustomFields();">
<option value="0" selected="selected">-Select Type-</option>
<option value="16">Contacts</option>
<option value="139">ZMS: How can we help you?</option>
<option value="178">Gita</option>
<option value="206">111 test</option>
</select>
</td>
<td align="right">Interest :</td>
<td><input name="leadCapture.interest" value="" id="leadCaptureList_leadCapture_interest" style="width:80px" type="text">
</td>
<td align="right">Score :</td>
<td colspan="2">
<select name="scoreLogicalOperator" id="leadCaptureList_scoreLogicalOperator">
<option value="greater" selected="selected">Greater than</option>
<option value="less">Less than</option>
<option value="equal">Equal to</option>
</select>
<input name="serachByleadScore" value="" id="leadCaptureList_serachByleadScore" style="width:80px" type="text">
</td>
</tr>
<tr id="advancedSearchRow3" style="display: none">
<td align="right">Lead Source:</td>
<td><input name="leadCapture.leadSource" value="" id="leadCaptureList_leadCapture_leadSource" style="width:80px" type="text"></td>
<td align="right">Ad Code:</td>
<td><input name="leadCapture.adCode" value="" id="leadCaptureList_leadCapture_adCode" style="width:80px" type="text"></td>
<td colspan="8" align="right"></td>
</tr>
<tr>
<td colspan="3" align="right" width="250px;">
<img src="images/btn_m_save_search.png" id="saveLeadSearchId" onclick="return popUpForSaveLeadSearch();" align="absmiddle" border="0">
<select name="savedSearchCriteria.id" id="leadCaptureList_savedSearchCriteria_id" onclick="disableLeadSearch()" onchange="return selectSearchCriteriaByName();">
<option value="-1" selected="selected">--Select a search--</option>
</select>
</td>
<td colspan="6"><input style="display: none;" value="Delete Search" onclick="return deleteLeadSearchData();" id="deleteSearchButton" type="button"></td>
<td id="tdForAdvancedSearch" align="right"><img src="images/btn_m_show_advanced.png" border="0">
</td>
<td colspan="3" align="right"><input alt="true" src="images/btn_search.png" id="leadCaptureList_searchBtn" name="searchBtn" value="true" onclick="$('#pageNumber').val(1);return validSearchField();" type="image">
<input alt="Submit" src="images/btn_m_clear_search.png" id="leadCaptureList_0" value="Submit" onclick="clearAllSearchFields();" type="image">
</td>
</tr>
</tbody></table>
</td>
</tr>
</tbody></table>
<div id="customFieldsDiv"></div>
<input name="noOfLeadsToBeDisplayed" value="250" id="noOfLeadsToBeDisplayedId" type="hidden">
<input name="pagination" value="" id="pagination" type="hidden">
<input name="pageNumber" value="1" id="pageNumber" type="hidden">
<input name="backButton" value="false" id="backButton" type="hidden">
<input name="nextButton" value="false" id="nextButton" type="hidden">
<input name="saveSearchFlag" value="false" id="leadCaptureList_saveSearchFlag" type="hidden">
</form></div>
</div></div></td></tr></tbody></table>

Answer 1

Finding a textbox which has an id attribute should practically not fail. Selenium WILL find it if it's there. In case if the element is not present / visible in the DOM when the findElement command gets executed then Selenium will throw an exception.
You can try WebDriver explict wait like this and see if it works:
WebElement textBox = (new WebDriverWait(driver, 10))
.until(ExpectedConditions.visibilityOfElementLocated(By.id("leadCaptureList_leadCapture_firstName")));