function init()
{
	//Zufälliger Wechsel des Keyvisual
	links = { 
		1: '/corporate/research/centres.asp',
		2: '/corporate/research/milestones.asp',
		3: 'javascript:openPopup("/corporate/research/drug_discovery_process/drug_discovery_process.html",955,600);'
	};
	alt_title = { 
		1: 'A State-of-the-art Research & Development Environment',
		2: 'Milestones in Research & Development history',
		3: 'From Mind to Market: the Research & Development Process'
	};
	if($('#keyvisual img').length > 0)
	{
		a = Math.ceil(Math.random()*3);
		$('#keyvisual img')[0].src = "/corporate/research/img/rd_keyvisual"+a+".jpg";
		$('#keyvisual img')[0].alt = alt_title[a]
		$('#keyvisual img')[0].title = alt_title[a]
		$('#keyvisual a.keyvisuallink')[0].href = links[a];
	}	
}

function activateNext() {
	var current = $('#newsskipper li.current')[0];
	if(current.nextSiblings().length > 0)
	{
		current.hide();
		current.removeClassName('current');
		nextSibling = current.nextSiblings()[0];
		nextSibling.show();
		nextSibling.addClassName('current');
		
		$('#previousskip')[0].removeClassName('invisible');
		if(nextSibling.nextSiblings().length == 0)
		{
			$('#nextskip')[0].addClassName('invisible');
		}
	}
	return false;
}
function activatePrevious() {
	var current = $('#newsskipper li.current')[0];
	if(current.previousSiblings().length > 0)
	{
		current.hide();
		current.removeClassName('current');
		previousSibling = current.previousSiblings()[0];
		previousSibling.show();
		previousSibling.addClassName('current');
		
		$('#nextskip')[0].removeClassName('invisible');
		if(previousSibling.previousSiblings().length == 0)
		{
			$('#previousskip')[0].addClassName('invisible');
		}
	}
	return false;	
}
$(document).ready(function(){ 
	init();
});