Maintain different Theme state and Product Categories

We are trying to develop a site using Nop which will be having three main sites containing unique themes for each and several different categories for each site . How can we maintain three different theme states and three different product categories for three sites using Nop.

Work flow is as below.

Home page with three images specifying the three sites. If you click one of the images it should redirect you to the nopcom site with the unique theme and unique product category.

we tried to use Cache but it will not load the prefered theme when you laod the site in a new tab or diffferent explorer.

keep them in a Session is not a gud idea even the query string is also a bad idea since u cant maintain it in each page.

how can we pass or maintain the unque theme parameter and category parameter for each site inside the nopcom.

One option is to record the sessionID with unique theme ID but in that case we need to maintain it for each user who logs into the site.

We were trying this for more than 24 man hours now and we are trying to heading to Xcart option tooo.

Hope some technical ppl in Nop will address this and give us a better solution for this.

Maintain different Theme state and Product Categories

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