function activateTab(tabname){
	var tabcontainers = new Array ('tabContent1', 'tabContent2', 'tabContent3', 'tabContent4');
	var tabs = new Array ('tab1', 'tab2', 'tab3', 'tab4');
	for (i=0;i<tabs.length;i++) {
		if (tabname == tabs[i]){
			//document.getElementById(tabs[i]).style.backgroundColor="#f8981d";
			document.getElementById(tabs[i]).className = 'productTabActive';
			document.getElementById(tabcontainers[i]).style.display="block";
		}
		else{
			//document.getElementById(tabs[i]).style.backgroundColor="gray";
			document.getElementById(tabs[i]).className = 'productTab';
			document.getElementById(tabcontainers[i]).style.display="none";
		}
	}
}