function trim(s) {
  while (s.substring(0,1) == ' ') {
    s = s.substring(1,s.length);
  }
  while (s.substring(s.length-1,s.length) == ' ') {
    s = s.substring(0,s.length-1);
  }
  return s;
}

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function verify(s, r){
	if(r != '' && !isInteger(r)){
		alert('Calificativul trebuie sa fie un numar');
		return false;
	}
	e = trim(s);
	if((e.length < 2)){
		alert('Sirul de cautare trebuie sa fie de minim  2 caractere.');
		return false;
	}
	else
		return search(e);
}

function search(e){
	var tmp = e.replace(/[ ]+/g, '-');
	document['cautare'].action = '/comunitati/cautare/'+(tmp != '' ? tmp : "rezultate-cautare-utilizator")+'.html';
}