var sponsors=new Array("heineken","1p1","abn","gooischebrink","hilversum","brugemann");
var total = sponsors.length;
var first = 0;
var forward = 1;
var myTimer = setInterval("timer()", 5000);


function timer()
{
	if(forward == 1)
	{
		nextsponsor();
	}
	else
	{
		prevsponsor();
	}
}

function init()
{
	
	innerhtml = '';		

	for (var n = 0; n < 5; n++)
	{			
		innerhtml += '<div id="blok'+n+'" style="margin: 10px 10px 0 0; float:left; width:140px; height:80px; "><a href="sponsoren/hoofdsponsoren/"><img src="client/hilversumalive/uploads/sponsoren/'+sponsors[n]+'.gif"/></a></div>';
	}	

	$('sponsors').innerHTML = innerhtml;
	
}	

function nextsponsor()
{
	
	clearInterval(myTimer);
	myTimer = setInterval("timer()", 5000);

	first++;

	forward = 1;
	
	if (first == total)
	{
		first = 0;
	}
	
	$('sponsors').innerHTML = ''
	innerhtml = '';
	
	sponsor = first;
	
	for (var n = 0; n < 5; n++)
	{
		if(sponsor >= total)
		{
			sponsor = 0;
		}
		
		innerhtml += '<div id="blok'+sponsor+'" style="margin: 10px 10px 0 0; float:left; width:140px; height:80px; "><a href="sponsoren/hoofdsponsoren/"><img src="client/hilversumalive/uploads/sponsoren/'+sponsors[sponsor]+'.gif"/></a></div>';
		$('sponsors').innerHTML = innerhtml;
		
		sponsor++;
	}					
}

function prevsponsor()
{
	
	clearInterval(myTimer);
	myTimer = setInterval("timer()", 5000);	
	
	first--;
	forward = 0;
	
	if (first < 0)
	{
		first = total;
		first--;
	}

	$('sponsors').innerHTML = ''
	innerhtml = '';
	
	sponsor = first;
	
	for (var n = 0; n < 5; n++)
	{
		if(sponsor >= total)
		{
			sponsor = 0;
		}
		
		innerhtml += '<div id="blok'+sponsor+'" style="margin: 10px 10px 0 0; float:left; width:140px; height:80px; "><a href="sponsoren/hoofdsponsoren/"><img src="client/hilversumalive/uploads/sponsoren/'+sponsors[sponsor]+'.gif"/></a></div>';
		$('sponsors').innerHTML = innerhtml;
		
		sponsor++;

	}					
}