Opponents of proposals for a £290 million sports and housing scheme have set up a web site to boost their campaign.

The Frank Gehry-designed King Alfred Centre on Hove seafront has divided the community and a number of opposition groups are campaigning for Brighton and Hove City Council to reject the proposals when they come to planning committee next year.

Save Hove claims its new site, www.savehove.org.uk, contains "the shocking alternative to the Karis/Gehry version of the truth of how this development would be experienced". It also allows users to download posters reading: "No seafront towers".

Member Valerie Paynter said: "The public has really struggled with the concept of a council leasing their seafront land for 250 years to a developer in return for a rebuilt sports centre, the surrender of struggling infrastructure and a much reduced quality of life. Save Hove exists to encourage people to take personal action and responsibility for the Hove they chose to come and live in."

Campaigners were heartened by last week's decision of the council's planning committee to refuse permission for a 420ft skyscraper at Brighton Marina. Ms Paynter said: "There is now the hope for Hove that the vogue for mega-developments will now seem very chav, very naff and highly destructive to the fabric of what is left of our communities and our attachment to heritage."

But Richard Coleman, founder of pro-King Alfred group Hove Up, said the Marina and King Alfred were two "totally different" developments and said his own organisation, which has grown to 50 members, was also working on setting up a web site.

The exhibition of the King Alfred plans are on display at Hove Town Hall until the end of the year.