change filters

Hello, Project number: 1 I need a change in logic and design in site filters. The site sells equipment. All filters from type "from to" be replaced with a slider. The initial value of the slider is equal to the lowest value taken from the product. The ultimate value of the slider is equal to the highest value taken from the product. For example, we have products 3 processor, the first is 2000 MHz, the second is at 3000 MHz, the third is at 4000 MHz. Automatically generates a filter, the initial value is 2000 and the end of 4000. When in the admin panel is added filter from type "from to" automatically client part appears to filter sliders. Currently it is done, but done with checkboxes. The goal is filters "from to" be replaced with a slider and values to be taken automatically as described above. The site is based: [login to view URL] I'm attaching an example, some files that I think are equip with filters. There are also 2 pictures before and after. Example of filter running at: [login to view URL] Thanks.