var cmpstr = "DISPLAY: none";
var nav = navigator.appName;
if (nav == 'Netscape') { cmpstr = "display: none;";} 


function depli(id) {

	var link = "txt_"+id;
	var link2 = "img_"+id;
	
	var temp = document.getElementById(link).style.cssText;
	
	if(trim(temp) == trim(cmpstr)) {
			document.getElementById(link).style.display="block";
			document.getElementById(link2).src="../usr/layout/toc_expanded.png";
		}

	else {
			document.getElementById(link).style.display="none";
			document.getElementById(link2).src="../usr/layout/toc_collapsed.png";
		}
	
}

function trim(s) {
    return s.replace(/^\s+/, '').replace(/\s+$/, '');
}