function switchrolling(specs) {

	try {
	
		var selectedperiod = document.getElementById('month'+specs).value;
		var selectoptions = document.getElementById('options'+specs).options.length;	


		if(selectedperiod == 'all' || selectedperiod == 'q1' || selectedperiod == 'q2' || selectedperiod == 'q3' || selectedperiod == 'q4') {
		   document.getElementById('options'+specs).value = 'month';
		   document.getElementById('options'+specs).style.display = 'none';	   
		}else {
		   document.getElementById('options'+specs).style.display = 'block';
		}
 	
	} catch(e){}
}

function displaycheck1() {

	var dc1 = document.getElementById('displaycolumn1').checked;
	var dc2 = document.getElementById('displaycolumn2').checked;
	
	
	if(dc2 == true)
		dc1 = false;
	else
		dc1 = true;
	
	
}

function displaycheck2() {

	var dc1 = document.getElementById('displaycolumn1').checked;
	var dc2 = document.getElementById('displaycolumn2').checked;
	
	
	if(dc1 == true)
		dc2 = false;
	else
		return;
	
	
}

function checkandsetmonth(number) {
	
	var listtype = document.getElementById('options'+number).value;
	
	if(listtype == 'rolling') {
	
		var month = document.getElementById('month'+number).value;
	
		if(!month.isInt())
			document.getElementById('month'+number).value = 1;
			
	}

}

function showbannertables(type) {

	if(type == 'image') {
	
		document.getElementById('imagepreview').style.display = 'block';
		document.getElementById('imagetable').style.display = 'block';
		
		document.getElementById('flashpreview').style.display = 'none';
		document.getElementById('flashtable').style.display = 'none';
	}

	if(type == 'flash') {
	
		document.getElementById('imagepreview').style.display = 'none';
		document.getElementById('imagetable').style.display = 'none';
		
		document.getElementById('flashpreview').style.display = 'block';
		document.getElementById('flashtable').style.display = 'block';
	}

}

function showbannertablesadd(type) {

	if(type == 'image') {
		document.getElementById('imagetable').style.display = 'block';
		document.getElementById('flashtable').style.display = 'none';
	}

	if(type == 'flash') {
		document.getElementById('imagetable').style.display = 'none';
		document.getElementById('flashtable').style.display = 'block';
	}

}

function showParticipants(areaid) {

	document.getElementById(areaid).style.display = 'block';

}

function hideParticipants(areaid) {

	document.getElementById(areaid).style.display = 'none';

}

function adaptMemberSelector() {

	var year = document.getElementById('year').value;
	document.window.alert('year');
	if(year > 2007)
		document.getElementById('memberselector').style.display = 'block';
	else
		document.getElementById('memberselector').style.display = 'none';
}