//Verifica se um determinado objecto esta vazio
function IsEmpty(aTextField) {   		
	if ((aTextField.value.length==0) || (aTextField.value==null)) {
		return true;
	}
	return false; 
}	

function isValidEmail(email,required) {
	var filter  = new RegExp(/^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*(\.[a-zA-Z]{2,4})$/);	
	if(required && !IsEmpty(email))
		return filter.test(email.value);
	else
		return filter.test(email.value);
//alert(email);
	return true;
}

function isVali(email){
	
	return IsEmpty(email);	
}


function centerImage( image, size ) {
	 if (image.width == 0) return;
	 	image.style.left = (size / 2 - image.width / 2) + 'px';
	 if (image.height < size) {
	 	image.style.top = (size / 2 - image.height / 2) + 'px';
	 } else {
	 	image.style.top = ((size - image.height) / 5) + "px";
	 }
 }
 
function imprimir(id){
	window.open('./index.php?m=vehicle&suppressHeaders=1&a=print&id='+id,'task','left=50,top=50,height=610,width=550,resizable=no, scrollbars=yes');
}



//Dados obrigatorios que devem de ser validados
/*function ValidateForm(form){			
	var actualDate=new Date();
	
	if(IsEmpty(form.markId) || form.markId.value==0){ 
	  alert("select valid mark");		
	  form.markId.focus();
	  return false; 
	} else if(IsEmpty(form.modelId) || form.modelId.value==0){ 
	  alert("select a valid model");		 
	  form.modelId.focus();
	  return false; 
	}else if(IsEmpty(form.imports)){ 
	  alert("select import option");
	  form.imports.focus(); 
	  return false; 
	} else if(IsEmpty(form.fuel) || form.fuel.value==0){ 
	  alert("select fuel");
	  form.fuel.focus(); 
	  return false; 
	} else if(IsEmpty(form.typeOfVehicle) || form.typeOfVehicle.value==0){ 
	  alert("select type of vehicle");
	  form.typeOfVehicle.focus(); 
	  return false; 
	} else if(IsEmpty(form.category) || form.category.value==0){ 
	  alert("select category");
	  form.category.focus(); 
	  return false; 
	}else if(form.contactId.value==0)
	{
	  alert("proprietor not selected");
	  form.contactId.focus(); 
	  return false; 
	}else if(form.companyId.value==0)
	{
	  alert("stand not selected");
	  form.companyId.focus(); 
	  return false; 
	}
	else if(!IsEmpty(form.miles))
	{
		if(isNumber(form.miles.value,"miles');?>"))
		{    	  	
		form.miles.focus(); 
		return false; 
		}
	}else if(!IsEmpty(form.pistonDisplacement))		
	{
		if(isNumber(form.pistonDisplacement.value,"pistonDisplacement');?>"))
		{    	  	
		form.pistonDisplacement.focus(); 
		return false; 
		}
	}else if(!IsEmpty(form.power))		
	{
		if(isNumber(form.power.value,"power');?>"))
		{    	  	
		form.power.focus(); 
		return false; 
		}
	}else if(!IsEmpty(form.nDoors))		
	{
		if(isNumber(form.nDoors.value,"nDoors');?>"))
		{    	  	
		form.nDoors.focus(); 
		return false; 
		}
	}else if(!IsEmpty(form.nPlaces))		
	{
		if(isNumber(form.nPlaces.value,"nPlaces');?>"))
		{    	  	
		form.nPlaces.focus(); 
		return false; 
		}
	}else if(!IsEmpty(form.vehicleWeight))		
	{
		if(isNumber(form.vehicleWeight.value,"vehicleWeight');?>"))
		{    	  	
		form.vehicleWeight.focus(); 
		return false; 
		}
	}
	
	return true;
}*/