// JavaScript Document
function toggle(obj,imgobj) {
	//el.style.display = (el.style.display != 'none' ? 'none' : '' );
	var el = document.getElementById(obj);
	var el_img = document.getElementById(imgobj);
	if ( el.style.display != 'none' ) {
		el.style.display = 'none';
		el_img.src='images/t_plus.gif';
	}
	else {
		el.style.display = '';
		el_img.src='images/t_minus.gif';
	}
}