function extend(name) {
	if (document.getElementById(name+'_txt').style.display == 'block') {		
		document.getElementById(name+'_txt').style.display = 'none';
		document.getElementById(name+'_img').src = 'image/plus.gif';
	}else{
		document.getElementById(name+'_txt').style.display = 'block';
		document.getElementById(name+'_img').src = 'image/minus.gif';
	}
	initScrollLayer();
}j