Search for HTML element tags Based on ID (search for child elements and find parent elements)

Find the specific elements of the context based on the current node
Search for child elements:
Code transferred from birdhome
<SCRIPT Lanuage = "JavaScript">
Function findchildelement (element, tagname)
{
VaR isfounded = false;
VaR elements = element;
VaR result = element;
If (element. tagname = tagname)
{
Return element;
}
While (! Isfounded & elements! = NULL & result! = NULL & result. tagname! = Tagname)
{
Elements = elements. childnodes;
For (VAR I = 0; elements! = NULL & I <elements. length; I ++)
{
Result = elements. item (I );
VaR result2 = findchildelement (result, tagname );
If (result = NULL | result2 = NULL)
{
Continue;
}
If (result. tagname = tagname | result2.tagname = tagname)
{
If (result2.tagname = tagname)
{
Result = result2;
}
Isfounded = true;
Break;
}
}
}
If (isfounded)
{
Return result;
}
Else
{
Return NULL;
}
}
</SCRIPT>

Find parent Element
 

<SCRIPT Lanuage = "JavaScript">
Function findparentelement (element, tagname)
{
While (element! = NULL & element. tagname! = Tagname)
{
Element = element. parentelement;
}
If (element! = NULL & element. tagname = tagname)
{
Return element;
}
Return NULL;
}
</SCRIPT>