function addClass(element, value) {
		if (!element.className) {
			element.className = value;
		} else {
			var newClassName = element.className;
			if(!newClassName.match(value)) {			  
			  newClassName += " ";
			  newClassName += value;
			  element.className = newClassName;
			}
		}
	}
	  
	function removeClass(element, value) {
		var curclassName = element.className;
		if(curclassName == value) {
		element.className = '';
		} else if(curclassName.match(value)) {
			value = ' '+value; //always has a space when added by addClass
			curclassName = curclassName.replace(value, '');
			element.className = curclassName;
		}
	}
	var subNavs = new Array('what', 'about', 'members', 'revolutions', 'show', 'education', 'support', 'video');
	var addedRec = new Array(0,0,0,0,0,0,0,0);
	
	
	function showSubNav(navtoshow) {
		var k;
		for(k in subNavs) {
			if(subNavs[k] == navtoshow) {
				if(IE6) addClass(document.getElementById(subNavs[k]), 'showoverflow');
				if(addedRec[k] == 0 && subNavs[k] != 'members' && subNavs[k] != 'show') {	
					addedRec[k] = 1;
				}
			} else {
				if(IE6) removeClass(document.getElementById(subNavs[k]), 'showoverflow');
			}
		}
	}