function size_affix_clicked(obj) {
	var file_type=document.getElementById('file_type');
	var file_type_options=document.getElementById('file_type_options');
	file_type.className='file_type';
	file_type_options.style.display='none';
	var from=document.getElementById('size_from');
	var from_options=document.getElementById('size_from_options');
	var to=document.getElementById('size_to');
	var to_options=document.getElementById('size_to_options');
	if(obj=='from') {
		if(from.className=='size_affix') {
			from.className='size_affix_show';
			from_options.style.display='';
			to.className='size_affix';
			to_options.style.display='none';
		}
		else {
			from.className='size_affix';
			from_options.style.display='none';
		}
	}
	else {
		if(to.className=='size_affix') {
			to.className='size_affix_show';
			to_options.style.display='';
			from.className='size_affix';
			from_options.style.display='none';
		}
		else {
			to.className='size_affix';
			to_options.style.display='none';
		}
	}
}

function file_type_clicked() {
	var from=document.getElementById('size_from');
	var from_options=document.getElementById('size_from_options');
	var to=document.getElementById('size_to');
	var to_options=document.getElementById('size_to_options');
	from.className='size_affix';
	from_options.style.display='none';
	to.className='size_affix';
	to_options.style.display='none';
	var file_type=document.getElementById('file_type');
	var file_type_options=document.getElementById('file_type_options');
	if(file_type.className=='file_type') {
		file_type.className='file_type_show';
		file_type_options.style.display='';
	}
	else {
		file_type.className='file_type';
		file_type_options.style.display='none';
	}
}

function checkbox_clicked(obj) {
	var checkbox=document.getElementById(obj+'_checkbox');
	if(checkbox.className=='checkbox') {
		checkbox.className='checkbox checkbox_active';
		document.getElementById(obj).value=1;
	}
	else {
		checkbox.className='checkbox';
		document.getElementById(obj).value=0;
	}
}