function check(it){
	if (it.Name.value==''){
		alert('Please input your name');
		it.Name.focus();
		return false;
	}
	if (it.Email.value==''){
		alert('Please input your email');
		it.Email.focus();
		return false;
	}
	if (Check_Email(it.Email.value)){
		alert("your email do not match!");
		it.Email.focus();
		return false;
	}
	if (it.Subject.value==''){
		alert('Please input your subject!');
		it.Subject.focus();
		return false;
	}
	if (it.Messages.value==''){
		alert('Please type your question/comment');
		it.Messages.focus();
		return false;
	}
}
function   Check_Email(string){     
	var   str_len   =   string.length;   
	if   (str_len<=5){   
		return   true   
		  }       
	for(i=0;i<str_len;i++){   
		  if   (string.charCodeAt(i)>127){   
	return   true     
	}   
	}   
	if   (string.indexOf("@")<2){   
		  return   true   
		  }       
				  if   (string.indexOf(".")==1){   
		  return   true   
		  }       
	if   (string.indexOf(":")!=-1){   
		  return   true   
	}   
}