The Civic Party yesterday vowed to continue its fight against building a government headquarters on the Tamar site, even though the government looks set to secure $5.1 billion in funding on Friday to finance design and construction of the project. In a last attempt at mustering public support, the party unveiled a model of its earlier, alternative proposal, which involves building a 20-storey, 23,700-square-metre annex to the Murray Building in Central. The proposal also involves renovating existing offices at the Central Government Offices and Murray Building. The party said this would be much cheaper than the Tamar proposal, and open the 4.2-hectare waterfront site to options including parks, open spaces and other public facilities. Leader Audrey Eu Yuet-mee said the party, which started a signature campaign on Sunday, would do its best to convince legislators to vote against the funding proposal, even though all other political parties have said they will back the project. Democrat Albert Ho Chun-yan said his party had no plan to change its stance on the vote. Ms Eu said: 'Legislators should serve to monitor the government and be responsible to the public. On Friday, legislators will cast their votes. And we will try our best.' Civic Party member Alan Leong Kah-kit admitted the chances of stopping funding from being approved were slim. 'It has become clear that the government will be able to force its way through Legco if it really wants to,' he said. 'However, even if the funding proposal is approved, it won't be the end of the battle because the government has yet to get approval on design and planning details.' He did not say whether there would be follow-up actions after Friday's vote but urged the government to carry out a three-month consultation before it decided what to do with Tamar.