Getting content to move aside when a positioned DIV is inserted?

The vertical layout of my page is:

A (header)
B (content)
C (footer)

For I'll be swapping in a DIV from about 10 different DIVs (using the <position> style) depending on what navigation choice the user clicks in the header.

My problem is that the DIVs are of different vertical sizes -- and often unknown vertical sizes because I don't know how big my visitors' browser windows are. So I don't know how to position <C> so that it always appears under the .

Originally I swapped the DIVs into with <innerHTML> instead of <position>, and that made <C> move to where it was supposed to be beautifully. But I can't do that because in Mac browsers JavaScript image-swapping no longer works on images in a DIV once it's swapped in somewhere with <innerHTML>.

Did that make sense? How do I get <C> to appear under an absolutely-positioned DIV of an undetermined height?

Thankie-doodle, -MBJ-

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>content-switch</title> <meta http-equiv="Content-Type" content="text/html; charset=shift_jis" /> <style type="text/css">  </style> <script type="text/javascript"> </script></head> <body> <div class="headfoot"><h1>THIS IS A BIG HEADER</h1> <div id="switches"><a onclick="switchd('wine');">story one</a> <a onclick="switchd('beer');">story two</a><a onclick="switchd('whisky');">story three</a></div> </div> <div id="wine" class="visible"> Study finds benefits in GM crops By Richard Black BBC environment correspondent A major study of genetically modified crops in the UK has found no evidence that they harm the environment. The Bright project looked at varieties of sugar beet and winter oil-seed rape which had been engineered to make them tolerant of specific herbicides. The novel crops were compared with non-GM cereals grown in rotation. The project concluded that the GM varieties, used in this way, did not deplete the soil of weed seeds needed by many birds and other wildlife. The findings of the Botanical and Rotational Implications of Genetically Modified Herbicide Tolerance (Bright) Link project were released on Monday QUICK GUIDE GM Food Bright was designed to mimic normal agricultural practice, and measure how these GM crops would perform when used in a typical crop rotation pattern over four years. Not only did the project find no evidence of seed depletion, it also pointed to potential benefits for farmers of growing the GM crops. There do appear to be a number of reasons why farmers might be quite interested in growing these crops Dr Jeremy Sweet, Bright scientific co-ordinator "What we have shown is that in the case of these two crops, there are ways of managing them which are quite practical, and farmers can deal with them quite readily," the study's scientific co-ordinator Dr Jeremy Sweet told BBC News. "There appear to be some management advantages in the flexibility of the herbicide usage; there could well be cost-benefit advantages, depending on the price of the herbicides and seeds when the crops are commercialised. "So there do appear to be a number of reasons why farmers might be quite interested in growing these crops." However, there is little prospect of GM crops being introduced into the UK in the short-term. Distant option THE BRIGHT LINK PROJECT Four-year study on relatively large plots (0.25-0.5 hectares) Studied GM winter rape and beet grown in rotation patterns Outcomes compared with plots of conventional plants GM crops tolerant to glyphosate or glufosinate herbicides One rape had cross-bred resistance to imidazolinone Studied numbers and diversity of weed seeds left in soil Looked for emergence of multi-herbicide-resistant plants Earlier this year another major trial, the Farm-Scale Evaluations or FSEs, found that two GM varieties, a sugar beet and a spring rape, were more damaging to biodiversity than conventional crops. There were fewer insect groups, such as bees and butterflies, recorded among the novel plants. A GM maize, on the other hand, appeared to do better than its conventional cousin. Following the FSE results, Environment Secretary Margaret Beckett announced that companies wishing to bring GM crops into the UK would have to go through a long approval process. THE BRIGHT FINDINGS GM crops showed increase weed seeds over 4 years Weed seed diversity in soil similar in GM and non-GM Advantages seen in GM in reduced weed control costs GM crops offered greater flexibility in spray timing Emerging multi-herbicide-resistant crops controllable Subsequently, Bayer CropScience, the only company with outstanding applications for government permission, withdrew those applications. Nevertheless, Bright will help biotech companies and proponents of GM agriculture argue that the crops should not be banned on environmental grounds. The European Union has indicated that member countries will in the future have to base decisions on whether or not to permit GM agriculture on science rather than public opinion. Public opposition However, Emily Diamand, senior farming researcher with the anti-GM Friends of the Earth, was sceptical that Bright really had mimicked normal farming practice. She told BBC News: "It was done at agricultural research centres, and real farmers never do things in the same way as they are done on research stations. FARM-SCALE EVALUATIONS FSEs report brochure GM tests show wildlife danger Q&A: GM farm-scale trials "Its findings are only as useful as the questions it asks - there are so many other things to be considered with GM crops, such as the effect on the soil, gene transfer to other plants, and the social and health impact." A UK government spokesman said of the Bright findings: "It's valuable research, and complements the Farm-Scale Evaluations. "It provides some valuable results and we'll ask Acre (the government's advisory panel on GM crops, the Advisory Committee on Releases to the Environment) to evaluate it, and we'll take it from there." More than half of Britons who took part in the "GM Nation" survey last year said GM crops should never be introduced in the UK under any circumstances.   </div> <div id="beer" class="hidden"> DNA bank to catch badger killers Badger Badger baiting can lead to imprisonment and a ￡5,000 fine A database of badger DNA is being created to snare criminals who set dogs on the animals and dig-up setts. The RSPCA project, which will cover England and Wales, is the first of its kind for a wild species. It is hoped the database will help bring successful prosecutions against people who dig and bait the animals. DNA can already be taken from a crime scene but there has been no reference database to prove the evidence - such as hair - is actually from a badger. Experts hope to take around 400 samples from across the country to represent the badger population. Insufficient evidence The RSPCA has commissioned Wildlife DNA Services Ltd to set up the database of hundreds of badger samples. Barry Fryer, chief superintendent at the Special Operations Unit at the RSPCA, said: "The database should significantly improve our chances of successfully prosecuting diggers and baiters. "In the past, we have been unable to proceed with cases through insufficient evidence linking the defendants to particular badgers. "With the extra supplementary evidence the DNA profiling will provide, we are confident that the cases we put forward will withstand the scrutiny of a court of law." Techniques developed DNA samples of badger hair, blood or faeces can be taken from a crime scene. Dr Rob Ogden, of Wildlife DNA Services, said: "At present the human DNA profiling system used to help criminal forensic investigations makes use of large databases. "Our aim is to build up an equivalent database for badger DNA which will assist the RSPCA in proving matches and securing prosecutions." Genetic techniques for identifying individual badgers have already been developed. 'National map' These profiles have been successfully used to identify individual badgers within three social groups with a 99% success rate. When enough samples are collected, scientists will begin profiling and recording them to form a national map of profiles from badger social groupings. RSPCA Special Operations inspectors have been given DNA testing kits which they will use to collect samples for the database. In 2003, the RSPCA received 241 complaints of badger digging in the UK. Under the Protection of Badgers Act 1992, it is illegal to interfere with a badger sett. The maximum sentence is six months' imprisonment and a ￡5,000 fine. </div> <div id="whisky" class="hidden"> Country profile: Japan Map of Japan The economic miracle achieved by Japan in the second half of the twentieth century was the envy of the rest of the world. But the rapid expansion of the post-war years - propelled by highly successful car and consumer electronics industries - had by the 1990s run out of steam. The 1997 Asian financial crisis, and bouts of recession, precipitated major banking, public spending and private sector reforms. OVERVIEW OVERVIEW � FACTS � LEADERS � MEDIA Japan has the world's second-biggest economy, but it remains a traditional society with strong social and employment hierarchies - Japanese men have always tended to work for the same employer for the whole of their life. But this and other traditions are under pressure as a young generation more in tune with western culture and ideas grows up. Japan's relations with its neighbours are still heavily influenced by the legacy of Japanese actions before and during World War II. Japan has found it difficult to accept and atone for its treatment of the citizens of countries it occupied. A Japanese court caused outrage by overturning a compensation order for Korean women forced to work as sex slaves. South Korea and China have also protested that Japanese school history books gloss over atrocities committed by the Japanese military. Japan's role on the world stage is considerable. It is a major international aid donor and a main source of global capital and credit. But the deployment of Japanese troops in Iraq following the US-led invasion in 2003 divided public opinion. Critics said the move violated the country's pacifist constitution. Fewer than 25% of Japan's people live in rural areas. Life for the majority on the four principal islands is in sprawling conurbations on overcrowded coastal plains, which surround mountainous, wooded interiors. FACTS OVERVIEW � FACTS � LEADERS � MEDIA * Population: 127.8 million (UN, 2004) * Capital: Tokyo * Area: 377,864 sq km (145,894 sq miles) * Major language: Japanese * Major religions: Shintoism, Buddhism * Life expectancy: 78 years (men), 85 years (women) (UN) * Monetary unit: yen * Main exports: Vehicles, computer parts, chemicals, scientific instruments and watches * GNI per capita: US $34,510 (World Bank, 2003) * Internet domain: .jp * International dialling code: +81 </div> <div class="headfoot">THIS IS A BIG FOOTER</div>

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Getting content to move aside when a positioned DIV is inserted?

Can't user <innerHTML>, have to use positioned DIVs

MichaelBluejay

BonRouge

MichaelBluejay

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