function changeContent(content,tab) {
        deactivateTabs();
        document.getElementById(tab).src='http://www.sealconusa.com/images/tabs/content-srf/tab-'+content+'-on.gif';
        var newContent = document.getElementById(content).innerHTML;		
        document.getElementById("divChange").innerHTML = newContent;
    }
    
    function deactivateTabs() {
		document.getElementById('tab1').src='http://www.sealconusa.com/images/tabs/content-srf/tab-srf-off.gif';
	    document.getElementById('tab2').src='http://www.sealconusa.com/images/tabs/content-srf/tab-access-off.gif';
        document.getElementById('tab3').src='http://www.sealconusa.com/images/tabs/content-srf/tab-features-off.gif';
        document.getElementById('tab4').src='http://www.sealconusa.com/images/tabs/content-srf/tab-tech-off.gif';
		document.getElementById('tab5').src='http://www.sealconusa.com/images/tabs/content-srf/tab-otheraccess-off.gif';
        return true;
    }