var errorColor="#fbc311";
		var normalColor="#FFFFFF";
		
		function ValidationException(codigo,mensaje,campo){
			this.codigo=(codigo==undefined)?0:codigo;
			this.mensaje=(mensaje==undefined)?null:mensaje;
			this.campo=(campo==undefined)?null:campo;
		}	
			
		function validateElements(elementos){
			for(var idx=0;idx<elementos.length;idx++){
				var vacio=elementos[idx].getAttribute("lang");
				if( ((vacio=="false") && (elementos[idx].value=="")) || elementos[idx].style.backgroundColor=="rgb(251, 195, 17)"){
					throw new ValidationException(1,"Needed: ",elementos[idx])
				}
			}
		}
			
		function checkForm(form){
			var ok;
			try{
				validateElements(form.elements);
				ok=true;
			}catch(ex){
				ex.campo.style.backgroundColor=errorColor;	
				ex.campo.focus();
				ok=false;
			}
			
			return ok;
		}

		function validateEmail(email){
			//alert(email.value);
			if (!isEmail(email.value)) {
					email.style.backgroundColor=errorColor;	
				//	email.focus();	
				}
			else{
				email.style.backgroundColor=normalColor;
			}
		}

		function validateText(e) {
			if (e.value.length < 3){
				e.style.backgroundColor=errorColor;	
				//e.focus();	
			} 
			else {
				e.style.backgroundColor=normalColor;
			}
		}
		
		function validateNumber(e) {
			if (e.value.length < 1){
		    	e.style.backgroundColor=errorColor;	
				//e.focus();	
		 	} 
			else {
		    	e.style.backgroundColor=normalColor;
		  	}
		}

		function isNumberKey(evt){
			var charCode = (evt.which) ? evt.which : event.keyCode;
				
			if((charCode==46||charCode==8||charCode==45||charCode==47) ||(charCode >= 48 && charCode <= 57) ){
				return true;
			}
			else {
				return false;
			}
		
		}
		  
		 function isAlphaKey(evt){
			 var charCode = (evt.which) ? evt.which : event.keyCode;
			 if ((charCode==231 || charCode==199) || (charCode==241 || charCode==209) ||(charCode==8 || charCode==32) || ( (charCode >= 65 && charCode <= 90) || (charCode >= 97 && charCode <= 122) ) ) {
			 	return true;
			 }
			 else {
				 return false;
			 }
		  }
		 
		 function isEmail(valor) {
		  if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/.test(valor)){
			return (true)
		  } else {
			return false;
		  }
		}