// VALIDA TAMANHO DA STRING
function WSsize(obj,size){
    var stri = new String(obj.value);
         if ( stri.length < size ){
                 return false;
         }
         return true;
}


// VALIDA NÚMEROS NA STRING
function WSnum(obj){
     var str = new String(obj.value);
     var bOk = 1;
     for (i = 0; i < str.length; i++){
             if ( str.substring(i,i+1) < "0" ||  "9" < str.substring(i,i+1) ){
                     i = str.length;
                     bOk = 0;
             }
     }
     if (bOk == 0)        {
             return false;
     }
     return true;
}


// VALIDA E-MAIL
	function WSemail(obj){
    	var invalid = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/;
     	if ( obj.length == 0 )	{
     		alert('Por favor, digite seu e-mail!');
	     	return false;
     	}
     	if (invalid.test( obj ) == false) {
     		alert('Email inválido!');
     		return false;
     	}     
     	return true;
	}
	
	
    // POP UP
    function WSpopup(url, name, height, width, barra)
    {
      var str = "height=" + height + ",innerHeight=" + height;
      str += ",width=" + width + ",innerWidth=" + width;
      str += ",status=no,scrollbars="+barra+",resizable=no";
      if (window.screen){
         var ah = screen.availHeight - 30;
         var aw = screen.availWidth - 10;
         var xc = (aw - width) / 2;
         var yc = (ah - height) / 2;
         str += ",left=" + xc + ",screenX=" + xc;
         str += ",top=" + yc + ",screenY=" + yc;
      }
      var win = window.open(url, name, str);
    }