function validate_search()
{
	var form='search';
	var f=document.forms[form];
	var searchs=trim(document.forms[form]['search_text'].value," ");
	if(searchs.length<3)
		{
			alert('Cautarea se face dupa minim 3 caractere!');
			return false;
		}
		else
			return true;

}


function trim(str, chars) {
    return ltrim(rtrim(str, chars), chars);
}

function ltrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}

function rtrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}