function linkalert(dsptext,site) { 
	var alertmsg = dsptext;
	var destsite = site;
	alert('We are currently unable to link directly to this product. Please search for \"' + dsptext + '\" at ' + site + '.') ;
	} 
/* Change "tab2" to "tab" and "tab_hover2" to "tab_hover" to use larger tabs 
   The class in the html code near the tabs has to be changed also */
		last_tab = 'tab1';
		function show(layerName) { 
			document.getElementById(layerName).style.display = '';
		} 
		
		function hide(layerName) { 
			document.getElementById(layerName).style.display = 'none';
		}	
		function show_next(tab_name) {
			document.getElementById(last_tab).className = 'tab2';
			var curr = document.getElementById(tab_name);
			curr.className='tab_hover2';
			hide(last_tab+'_data');
			show(tab_name+'_data');
			last_tab=tab_name;
		}