function setupTabs() {

	tabs = getElementsByClass("tab");
	for (i=0;i<tabs.length;i++) {	
		tabs[i].onmouseover = function() {
			this.className='tab over';
		}
		tabs[i].onmouseout = function() {
			this.className='tab';
		}
	}
	tabsActive = getElementsByClass("tab active");
	for (i=0;i<tabsActive.length;i++) {
		tabsActive[i].onmouseover = function() {
			this.className='tab over';
		}
		tabsActive[i].onmouseout = function() {
			this.className='tab active';
		}
	}	

} 


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++;
		}
	}
	if (classElements.length > 0) {
		return classElements;
	} else {
		return false;
	}
}