function go(){
   var index,param,href;
   
   index = document.catform.catmenu.selectedIndex;
   newspageid= document.catform.newspageid.value;
   newslanguage= document.catform.newslanguage.value;
      
   switch (index) {
    	case 0 :
        	self.location.search="?id="+newspageid+"&no_cache=1&L="+newslanguage
        	break;
    	case 1 :
        	self.location.search="?id="+newspageid+"&no_cache=1&tx_ttnews[cat]=10&L="+newslanguage
        	break;
    	case 2 :
    		self.location.search="?id="+newspageid+"&no_cache=1&tx_ttnews[cat]=13&L="+newslanguage
    		break;
    	case 3 :
    		self.location.search="?id="+newspageid+"&no_cache=1&tx_ttnews[cat]=16&L="+newslanguage
    		break;
    	case 4 :
    		self.location.search="?id="+newspageid+"&no_cache=1&tx_ttnews[cat]=19&L="+newslanguage
    		break;
    	default :
        	alert("nothing selected");
   }      
}