/*	dynamicCSS.js v1.0 <http://www.bobbyvandersluis.com/articles/dynamicCSS.php>
	Copyright 2005 Bobby van der Sluis
	This software is licensed under the CC-GNU LGPL <http://creativecommons.org/licenses/LGPL/2.1/>
*/

function createStyleRule(selector, declaration) {
	if (!document.getElementsByTagName || !(document.createElement || document.createElementNS)) return;
	var agt = navigator.userAgent.toLowerCase();
	var is_ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
	var is_iewin = (is_ie && (agt.indexOf("win") != -1));
	var is_iemac = (is_ie && (agt.indexOf("mac") != -1));
	if (is_iemac) return; // script doesn't work properly in IE/Mac
	var head = document.getElementsByTagName("head")[0]; 
	var style = (typeof document.createElementNS != "undefined") ?  document.createElementNS("http://www.w3.org/1999/xhtml", "style") : document.createElement("style");
	if (!is_iewin) {
		var styleRule = document.createTextNode(selector + " {" + declaration + "}");
		style.appendChild(styleRule); // bugs in IE/Win
	}
	style.setAttribute("type", "text/css");
	style.setAttribute("media", "screen"); 
	head.appendChild(style);
	if (is_iewin && document.styleSheets && document.styleSheets.length > 0) {
		var lastStyle = document.styleSheets[document.styleSheets.length - 1];
		if (typeof lastStyle.addRule == "object") { // bugs in IE/Mac and Safari
			lastStyle.addRule(selector, declaration);
		}
	}
}

/*	DOM manipulation functions;
	Can only be used after a page has fully loaded
*/

function setElementStyleById(id, propertyName, propertyValue) {
	if (!document.getElementById) return;
	var el = document.getElementById(id);
	if (el) el.style[propertyName] = propertyValue;
}

function setElementStyle(element, propertyName, propertyValue) {
	if (!document.getElementsByTagName) return;
	var el = document.getElementsByTagName(element);
	for (var i = 0; i < el.length; i++) {
		el[i].style[propertyName] = propertyValue;
	}
}

function setElementStyleByClassName(cl, propertyName, propertyValue) {
	if (!document.getElementsByTagName) return;
	var re = new RegExp("(^| )" + cl + "( |$)");
	var el = document.all ? document.all : document.getElementsByTagName("body")[0].getElementsByTagName("*"); // fix for IE5.x
	for (var i = 0; i < el.length; i++) {
		if (el[i].className && el[i].className.match(re)) {
			el[i].style[propertyName] = propertyValue;
		}
	}
}

// getElementsByClass function by Dustin Diaz
// http://www.dustindiaz.com/getelementsbyclass/
function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function selectTab(id) {
	var n = document.getElementById("tabModule");
	var el = getElementsByClass("tab",n,"*");
	for ( i=0;i<el.length;i++ ) {
		//alert(el.length);
		el[i].className = "tab";
	}
	document.getElementById(""+id+"").className="tab selected";
}