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Programmatically change body tags

Add javascript

When you need to add onload event javascript to a bodyTag, from within your extension, use:

$GLOBALS["TSFE"]->JSeventFuncCalls["onload"][$this->prefixId]="<yourJavascriptInitCall();>";

The same method applies to onunload. Then replace "onload" by "onunload".

$GLOBALS["TSFE"]->JSeventFuncCalls["onunload"][$this->prefixId]="<yourJavascriptUnLoadCall();>";