function email(code)
{
	var arr = code.split('');
	var count = arr.length; 
	var ret = '';
	for(var i=count-1; i>=0; --i)
	{
		var char = arr[i];
		if( char == "@")
		{
			ret += "@";
		}
		else
		{
			ret += String.fromCharCode(char.charCodeAt(0)+4);
		}
	}
	window.location.href="mailto:"+ret;
}