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No-Library (pure JS), HTML, CSS, Babel + JSX
Demonstrating a function for calculating the intersection of two lines, and determining whether the intersection point is on either line segment.
http://chikuyonok.ru/2009/06/float-columns/
jQuery 2.1.3, HTML, CSS, JavaScript
jQuery 2.1.0, HTML, CSS, JavaScript
By http://creative-punch.net
jQuery 1.11.0, HTML, CSS, JavaScript