function setPageState(pageState) {
	var productTabs = document.getElementById('productTabs');
	var tabLiArray = productTabs.getElementsByTagName('li');
	
	for(var i = 0; i<tabLiArray.length; i++) {
		var id = tabLiArray[i].id;
		var tab = 'product_' + id.substr(0, id.indexOf('_'));
		var tabDiv = document.getElementById(tab);
		var compare = pageState + '_button';	
		var className, style;
		
		if(id == compare){
			className = 'current';
			style = 'block';
		} else {
			className = '';
			style = 'none';
		}
		tabLiArray[i].className = className;
		tabDiv.style.display = style;
	}
	return false;
}