var agt = navigator.userAgent.toLowerCase();
var is_major = parseInt(navigator.appVersion);
var is_nav = ((agt.indexOf('mozilla') != -1) && (agt.indexOf('spoofer') == -1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera') == -1) && (agt.indexOf('webtv') == -1));
var is_nav4up = (is_nav && (is_major >= 4));
var is_ie = (agt.indexOf("msie") != -1);
var is_ie3  = (is_ie && (is_major < 4));
var is_ie4  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5") == -1) && (agt.indexOf("msie 6") == -1));
var is_ie4up = (is_ie && (is_major >= 4));
var is_ie5up  = (is_ie  && !is_ie3 && !is_ie4);
var is_mac = (agt.indexOf("mac") != -1);
var is_gecko = (agt.indexOf("gecko") != -1);

function grabObject (id) {
	if (is_ie4) {
		var view = eval(id);
	}	
	if (is_ie5up || is_gecko) {

		var view = document.getElementById(id);

	}	return view;

}

	
function show_hide(id,obj) {
	if(is_ie4up || is_gecko) {		
		var hdn_div = grabObject('hdn'+id);		
		var shdn_span = grabObject('shdn'+id);
		if(hdn_div.style.display == 'block') {			
			hdn_div.style.display = 'none';
			eval('document.all.link'+id+'.className = "ptitle_close"');
		} else {				
			hdn_div.style.display = 'block';
			eval('document.all.link'+id+'.className = "ptitle"');
		}		
	}	
}

function open_div(number, default_status) {		
	if (is_ie4up || is_gecko) {			
		document.writeln("<div id='hdn" + number + "' name='hdn" + number + "' style='display: " + default_status + ";'>");		
	}	
}

function close_div(number) {		
	if (is_ie4up || is_gecko) {			
		document.writeln("</div>");		
	}	
}