function toggle_contribution(){
	var div1 = document.getElementById('contribution')
	var div2 = document.getElementById('spreadword')
	if (div1.style.display == 'none') {
		div1.style.display = 'block'
		div2.style.fontWeight = 'bold'
	} else {
		div1.style.display = 'none'
		div2.style.fontWeight = 'normal'
	}
}