Move up in DOM hierarchy using selenium - dom

Question

I want to access a DOM Element which is above in hierarchy to an element i have access of.
In the Attached ScreenShot I want to access the #pRow_22 which a Grand Grand Grand Parent of #ntsDiv_1. But I have the access to #ntsDiv_1 only. Please suggest me what to do in such a scenario
html code is like this:-
<tr id="pRow_22" style="border-bottom: 0;">
<td class="nameCell" style="border-bottom: 1px solid #CCCCCC;">
<div id="seller_22" class="product-sellercell">
<a id="pLogoLink_22" target="_blank" href="/norob/ClickTracker.somethins..." onclick="setMerchLb('eComElectronics.com')" rel="nofollow">
<div>
<a id="ntsLink_1" rel="nofollow" onclick="return false;" href="#">
</div>
<div id="ntsDiv_1" class="mlt-pop-container" style="width: 250px; text-align: left; white-space: normal; top: 2340px; left: 131px; visibility: hidden;">
<div class="mlt-pop-bg">
</div>
.
.
</div>
</td>

Answer 1

try using xpath
.//a[contains(#id,'ntsLink_1')]/ancestor::tr

Answer 2

Try This :
By.cssSelector("a[id='ntsdiv_1']")
suppose here is the hierarchy:
<div class="1">............ (suppose it's div 1 open)
<div class="2">........ (div 2 open)
<div class="3">....... (div 3 open)
</div>..... (div 3 closed)
<div class="4">...... (div 4 open)
</div>..... (div 4 closed)
</div>......... (div 2 closed)
</div>......... (div 1 closed)
now, we want to access div 4
Note: div 3 and div 4 are of same level, these two are child of div 2 whose parent is div 1
We want to access class 4
we ac do it using xpath but the class of div 4 is not unique and the class 1 is, so you can traverse it as such:
By.xpath(".//div[#class='1']/div/div[2]")
Explanation: div[2] means it is going to access the class 1 which has div of class 3 and whose child has two div of classes class 3 and class 4 but i want to access the second div which has class 4 so, div[2].
cssSelector
sometimes we cannot access the path so, we can access it by using css selector, suppose we have a scenario as such
<div class="1">
<rect class="2">
<text class="3">
</text>
</rect>
</div>
to access the class of text
we use By.cssSelector as:
By.cssSelector("text[class='3']");