CHALLENGING HTML5 Task: Optimise SVG Manipulation/Drawing to perform fastest

I need an expert in Javascript/jQuery to optimize a code in wrote. The demonstration can be found here [login to view URL] Once loaded, the SVG lines are manipulated to show the link to the correct rows, as the user scrolls the table. The problem is that while this scroll is happening, the line do not move smoothly. I need some EXPERT to optimize the code to perform Issue Demonstration: [login to view URL]