function validateForm() {
	 var valid = true;
	 if(document.forms.frm_info.x_name.value == ""){
		 document.getElementById('name').style.display = 'inline';
		 valid = false;
	 } else { 
	 	document.getElementById('name').style.display = 'none'; 
	 }
	 if(document.forms.frm_info.x_subname.value == ""){
		 document.getElementById('surname').style.display = 'inline';
		 valid = false;
	 } else { 
	 	document.getElementById('surname').style.display = 'none'; 
	 }
	 if(document.forms.frm_info.x_email.value == "" || !(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(document.forms.frm_info.x_email.value ))){
		 document.getElementById('email').style.display = 'inline';
		 document.getElementById('wrongEmail').style.display = 'inline';
		 valid = false;
	 } else { 
	 	document.getElementById('email').style.display = 'none'; 
		document.getElementById('wrongEmail').style.display = 'none';
	 }
	 
	 if(document.forms.frm_info.x_phone.value!='' &&  !(/^[0-9]+$/.test(document.forms.frm_info.x_phone.value ))){ 
		document.getElementById('phone').style.display = 'inline'; 
		valid = false;
	 } else { 
	 	document.getElementById('phone').style.display = 'none'; 
	 }
	return valid;
}