Example 1:

I want to make sure you read the 3^rd можно найти и выделить параграф с возвратом к ссылке поиска that I am referring to now, but which you cannot see because it is lower down the page
So ... I create a keyword by emphasising the word paragraph, in bold, and make it a link.

When you click the link the page scrolls down to bring the paragraph into view, the background of the paragraph flashes, and the page scrolls back up.

Example 2:

I want to point out a specific можно найти и выделить слово с возвратом к ссылке поиска in that paragraph

Сама ссылка может быть словом (с возвратом)

The target is simply:
Highlighted Text

Each separate caller and individual target must have its own unique identity, but you can call the same target with more than one caller.

IE:
Caller1 - Target1, Caller2 - Target1

2 слова 1 с возвратом к этой-же ссылке and

Поиск можно делать и вниз и вверх и без возврата 
если адресс возврата при поиска вверх находится выше адреса поиска. 
Или при поиске вниз адрес возврата находится ниже адреса поиска вниз 

Note:
In order to test the script yourself, once you have copied the above into your page you need to make your page long enough to scroll. To do this add about 20 line breaks
between caller1, target1, and caller2.

The script ended up longer than anticipated because I had to include some preventative measures to stop the browser locking up.
This happened because I am using the while statement, and through experimental mishaps (positioning the caller and/or target at the extreme top or bottom of the page) I found that if the scroll went over the upper and lower limits of the page the while loop would not terminate, hence a lockup.
Function Init and two if statements in each function prevent this from happening.

If you use this script and should have the misfortune to experience a lockup just increase the variable Top_Limit value. --> Можно несколькими ссылками искать одно и тоже, выделяя разного цвета подсветкой, и делать возврат к другой ссылке(2 слова 2)

In order to test the script yourself, once you have copied the above into your page you need to make your page long enough to scroll. To do this add about 20 line breaks
between caller1, target1, and caller2.

The script ended up longer than anticipated because I had to include some preventative measures to stop the browser locking up.
This happened because I am using the while statement, and through experimental mishaps (positioning the caller and/or target at the extreme top or bottom of the page) I found that if the scroll went over the upper and lower limits of the page the while loop would not terminate, hence a lockup.
Function Init and two if statements in each function prevent this from happening.

If you use this script and should have the misfortune to experience a lockup just increase the variable Top_Limit value