function hover( cont ) {
	var image = document.getElementById(cont).getElementsByTagName('img')[0];
	image.src = 'http://www.keep-cool.jugendhilfe-karlshoehe.de/typo3/fileadmin/templates/k33p-c00l/images/'+cont+'_2.png';
}

function out( cont ) {
	var image = document.getElementById(cont).getElementsByTagName('img')[0];
	image.src = 'http://www.keep-cool.jugendhilfe-karlshoehe.de/typo3/fileadmin/templates/k33p-c00l/images/'+cont+'_1.png';
}