JavaScript that calculates H1,H2,H3 Heigh in the page.

JavaScript Library that calculates H1,H2,H3, etc. heigh in the page loaded with and stores the height in the DOM to be used for other JS. As for each reader screen, device and orientation is different we would like to know for every specific load where the H1,H2,H3, etc and Links are rendered. Javascript shall parse all the Page in search of all Titles and Links. Store in the DOM a JSON with all the Title and Links and their height in pixels. (0 pixel is defined on top) DOM with the array of all the Titles and Links. Type: HX TITLE: Title Text of the H1 Heigh: # Pixels from Top Unique ID: unique-ID for each repetition of the same HX. Type: Link Link: URL Heigh: # Pixels from Top Unique ID: unique-ID for each repetition of the same Link. (the same link can be in different places in the same web)