// JavaScript Document
function checkField(form,field){ 
	return (!trim(form.elements[field].value)=="");
	} 
	
function checkFieldSelect(form, field){
	return (!form.elements[field].selectedIndex==0);
	}
	
function msgErroCamposEmFalta(str){
	alert("Preencher os seguintes campos:\n"+str);
	}
	
function trim(s){
	while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r'))
		s = s.substring(1,s.length); 
	while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r'))
		s = s.substring(0,s.length-1); 
	return s;
	}