function change(divToShow) {
				 thisDiv = document.getElementById(divToShow);
				 thisHead = document.getElementById(divToShow + '_head');
				 if (thisDiv.style.display == 'none' ) { 	// || thisDiv.style.display == ''
				 		thisDiv.style.display = 'block';
						thisHead.className = "headeropen";
				}
				 else {
				 			thisDiv.style.display = 'none';
							thisHead.className = "header";
				}
	
}