function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function checkAllBoxes(form) { //v6.0
	if(form.All_Channels.checked == true){
		var channels = form.elements['channels[]'];
		for (var i = 0; i < channels.length; i++) {
			channels[i].selected = false;
		}
	}
}

function uncheckRadioChannels(form) { //v6.0
		var channels = form.elements['channels[]'];
		for (var i = 0; i < channels.length; i++) {
			if (channels[i].selected) {
				form.All_Channels.checked = false;
			}
	}
}

function uncheckAllTypes(form) { // uncheck "All competitions" radiobutton when any type is selected
	var types = form.elements['types[]'];
	for (var i = 0; i < types.length; i++) {
		if (types[i].selected) form.All_Competitions.checked = false;
	}
}
function uncheckTypes(form) { // uncheck all types when "All competitions" is clicked
	if(form.All_Competitions.checked == true){
		var types = form.elements['types[]'];
		for (var i = 0; i < types.length; i++) {
			types[i].selected = false;
		}
	}	
}

function uncheckCountries(form) {
	if(form.All_Countries.checked == true){
//		form.Argentina.checked = false;
		form.Brazil.checked = false;
		form.Canada.checked = false;
		form.England.checked = false;
		form.France.checked = false;
		form.Germany.checked = false;
		form.Italy.checked = false;
		form.Portugal.checked = false;
		form.Scotland.checked = false;
		form.Spain.checked = false;
		form.USA.checked = false;
	}
}
function uncheckAllCountries(form) {
	if(form.Brazil.checked == true || form.Canada.checked == true || form.England.checked == true || form.France.checked == true || form.Germany.checked == true || form.Italy.checked == true || form.Portugal.checked == true || form.Scotland.checked == true || form.Spain.checked == true || form.USA.checked == true){
		form.All_Countries.checked = false;
	}

}