function addSearch(xtab)
{

  if ((typeof window.external == "object") && ((typeof window.external.AddSearchProvider == "unknown") || (typeof window.external.AddSearchProvider == "function"))) {

	switch(xtab)
	{
	case 'f':
	  window.external.AddSearchProvider("http://en.forkus.com/vhost/osfiles.xml");
	  break;
	  
	case 'd':
	  window.external.AddSearchProvider("http://en.forkus.com/vhost/osdocs.xml");
	  break;
	  
	case 'l':
	  window.external.AddSearchProvider("http://en.forkus.com/vhost/oslearn.xml");
	  break;
	  
	case 'ds':
	  window.external.AddSearchProvider("http://en.forkus.com/vhost/osdiscuss.xml");
	  break;
	  
	case 'c':
	  window.external.AddSearchProvider("http://en.forkus.com/vhost/oscompare.xml");
	  break;
	  
	case 'm':
	  window.external.AddSearchProvider("http://en.forkus.com/vhost/osmedia.xml");
	  break;
	  
	default:
	  window.external.AddSearchProvider("http://en.forkus.com/vhost/osfiles.xml");
	}
	
    
  } else {
    
	window.location = "/about-us/opensearch.htm";
  }
}

function tabnav(ctab){

	var qboxval = document.getElementById("qbox").value;
	
	if (qboxval == ""){
		window.location = "/"+ctab+"/";
	}else{
		window.location = "/"+ctab+"/"+qboxval+".htm";
	}
}

function qbox_change(qbox){
	
	var qboxval = document.getElementById("qbox").value;
	var qbox2val = document.getElementById("qbox_2").value;
	
	if(qbox == "qbox"){
		document.getElementById("qbox_2").value = qboxval;
	}else{
		document.getElementById("qbox").value = qbox2val;
	}

}