function mostbox_click(button_num) {
	var btn1 = document.getElementById('mostread_btn1');
	var btn2 = document.getElementById('mostread_btn2');
	var btn3 = document.getElementById('mostread_btn3');
	
	var content1 = document.getElementById('mostread_content1');
	var content2 = document.getElementById('mostread_content2');
	var content3 = document.getElementById('mostread_content3');
	
	var button_num_int = parseInt(button_num);

	if (button_num_int == 1) {
		content1.style.display = 'block';
		content2.style.display = 'none';
		content3.style.display = 'none';
		
		btn1.src = 'images/mostread/100_1.gif';
		btn2.src = 'images/mostread/100_2.gif';
		btn3.src = 'images/mostread/100_3.gif';
	}
	else if (button_num_int == 2) {
		content1.style.display = 'none';
		content2.style.display = 'block';
		content3.style.display = 'none';
		
		btn1.src = 'images/mostread/010_1.gif';
		btn2.src = 'images/mostread/010_2.gif';
		btn3.src = 'images/mostread/010_3.gif';
	}
	else if (button_num_int == 3) {
		content1.style.display = 'none';
		content2.style.display = 'none';
		content3.style.display = 'block';
		
		btn1.src = 'images/mostread/001_1.gif';
		btn2.src = 'images/mostread/001_2.gif';
		btn3.src = 'images/mostread/001_3.gif';
	}
	
}