function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function submitForm() {

    k = document.getElementById('keyword').value;
    
    if (!k) {
	
	alert('Please, enter a keyword to search!');
	
    } else {
    
	document.search.submit();
    
    }

}