// tabs 1

function ewi2_styles_tab(id, tid) {
	hide_tabs();
	addClass(document.getElementById(id), 'ewi2_styles_show');
	addClass(document.getElementById(tid), 'ewi2_styles_active');
}
function hide_tabs() {
	var elms = getElementsByClass('ewi2_styles_tab');
	for (x in elms) {
		if (hasClass(elms[x], 'ewi2_styles_show')) {
			removeClass(elms[x], 'ewi2_styles_show');
		}
	}
	var elms = getElementsByClass('ewi2_styles_tab-label');
	for (x in elms) {
		if (hasClass(elms[x], 'ewi2_styles_active')) {
			removeClass(elms[x], 'ewi2_styles_active');
		}
	}
}

// tabs 2

function ewi2_styles_tab2(id, tid) {
	hide_tabs2();
	addClass(document.getElementById(id), 'ewi2_styles_show2');
	addClass(document.getElementById(tid), 'ewi2_styles_active2');
}
function hide_tabs2() {
	var elms = getElementsByClass('ewi2_styles_tab2');
	for (x in elms) {
		if (hasClass(elms[x], 'ewi2_styles_show2')) {
			removeClass(elms[x], 'ewi2_styles_show2');
		}
	}
	var elms = getElementsByClass('ewi2_styles_tab2-label2');
	for (x in elms) {
		if (hasClass(elms[x], 'ewi2_styles_active2')) {
			removeClass(elms[x], 'ewi2_styles_active2');
		}
	}
}

// tabs 3

function ewi2_styles_tab3(id, tid) {
	hide_tabs3();
	addClass(document.getElementById(id), 'ewi2_styles_show3');
	addClass(document.getElementById(tid), 'ewi2_styles_active3');
}
function hide_tabs3() {
	var elms = getElementsByClass('ewi2_styles_tab3');
	for (x in elms) {
		if (hasClass(elms[x], 'ewi2_styles_show3')) {
			removeClass(elms[x], 'ewi2_styles_show3');
		}
	}
	var elms = getElementsByClass('ewi2_styles_tab3-label3');
	for (x in elms) {
		if (hasClass(elms[x], 'ewi2_styles_active3')) {
			removeClass(elms[x], 'ewi2_styles_active3');
		}
	}
}

// Generic


function hasClass(ele,cls) {
	return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}
function addClass(ele,cls) {
	if (!this.hasClass(ele,cls)) ele.className += " "+cls;
}
function removeClass(ele,cls) {
	if (hasClass(ele,cls)) {
   		var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
		ele.className=ele.className.replace(reg,' ');
	}
}
function getElementsByClass( searchClass, domNode, tagName) {
	if (domNode == null) domNode = document;
	if (tagName == null) tagName = '*';
	var el = new Array();
	var tags = domNode.getElementsByTagName(tagName);
	var tcl = " "+searchClass+" ";
	for(i=0,j=0; i<tags.length; i++) {
		var test = " " + tags[i].className + " ";
		if (test.indexOf(tcl) != -1)
			el[j++] = tags[i];
	}
	return el;
}