//Variables para detectar el tipo de browser
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) {
	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';
			shdn_span.innerHTML = '<img src="templates/default/images/expand.gif" width="9" height="9" border="0"> Show Options';
		} 
		else {
			hdn_div.style.display = 'block';
			shdn_span.innerHTML = '<img src="templates/default/images/collapse.gif" width="9" height="9" border="0"> Hide Options';
		}
	}
}

function show_hideWithText(id,text) {
	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';
			shdn_span.innerHTML = '<img src="templates/default/images/expand.gif" width="9" height="9" border="0"> ' + text;
		} 
		else {
			hdn_div.style.display = 'block';
			shdn_span.innerHTML = '<img src="templates/default/images/collapse.gif" width="9" height="9" border="0"> Hide Options';
		}
	}
}

function show(id) {
	if(is_ie4up || is_gecko) {
		var hdn_div = grabObject('hdn'+id);
		var shdn_span = grabObject('shdn'+id);
		if(hdn_div.style.display == 'block') {
		} 
		else {
			hdn_div.style.display = 'block';
			shdn_span.innerHTML = '<img src="templates/default/images/collapse.gif" width="9" height="9" border="0"> Hide Options';
		}
	}
}

function open_div(number) {
	if (is_ie4up || is_gecko) {
		document.writeln("<div id='hdn" + number + "' name='hdn" + number + "' style='display: none;'>");
	}
}

function open_span(number) {
	if (is_ie4up || is_gecko) {
		document.writeln("<a href='javascript: show_hide(" + number + ");'><span id='shdn" + number + "' class='textoRojo'><img src='templates/default/images/expand.gif' width='9' height='9' border='0'> Show Options</span></a>");
	}
}

function open_span_withTabIndex(number,tabIndex) {
	if (is_ie4up || is_gecko) {
		document.writeln("<a href='javascript: show_hide(" + number + ");' tabIndex='"+tabIndex+"'><span id='shdn" + number + "' class='textoRojo'><img src='templates/default/images/expand.gif' width='9' height='9' border='0'> Show Options</span></a>");
	}
}

function open_spanwithText(number,text) {
	if (is_ie4up || is_gecko) {
		document.writeln("<a href='javascript: show_hideWithText(" + number + ",\""+text+"\");'><span id='shdn" + number + "' class='textoRojo'><img src='templates/default/images/expand.gif' width='9' height='9' border='0'>"+ text + "</span></a>");
	}
}

function visible(nr) {
	if (document.layers)
		document.layers[nr].visibility = 'show';
	else if (document.all)
		document.all[nr].style.visibility = 'visible';
	else if (document.getElementById)
		document.getElementById(nr).style.visibility = 'visible';
}

function invisible(nr) {
	if (document.layers)
		document.layers[nr].visibility = 'hide';
	else if (document.all)
		document.all[nr].style.visibility = 'hidden';
	else if (document.getElementById)
		document.getElementById(nr).style.visibility = 'hidden';
}