function vote(num, antwId) 
{
	var url = document.getElementById('vpollimg'+ num).src
	var state = url.substr(url.lastIndexOf('.') - 1, 1);
	
	for(i=1; i > 0; i++) {
		if(document.getElementById('vpollimg'+ i) != null) {
			toggle('vpollimg'+i, 0); 
		} else {
			break;
		}
	}
	
	newstate = parseInt(Math.abs(parseInt(state) - 1));
	if(newstate == 1) {
		toggle('vpollimg'+ num, 1);
		document.getElementById('pollChoice').value = antwId;
	} else {
		toggle('vpollimg'+ num, 0);
		document.getElementById('pollChoice').value = '';
	}
	
	
}