function collapse_1() {
	document.getElementById("table_1").style.display = 'none';
	document.getElementById("table_open1").style.display = 'none';
	document.getElementById("table_close1").style.display = 'block';
}
function expand_1() {
	document.getElementById("table_1").style.display = 'block';
	document.getElementById("table_open1").style.display = 'block';
	document.getElementById("table_close1").style.display = 'none';
	
}   
function collapse_2() {
	document.getElementById("table_2").style.display = 'none';
	document.getElementById("table_open2").style.display = 'none';
	document.getElementById("table_close2").style.display = 'block';
}
function expand_2() {
	document.getElementById("table_2").style.display = 'block';
	document.getElementById("table_open2").style.display = 'block';
	document.getElementById("table_close2").style.display = 'none';
	
}