/**
 * 注册表单合法性检测
 * @author rick
 * @version 1.0
 * @copyright mytpo.com
 */



function checkemail(){
	/* Create a new XMLHttpRequest object to talk to the Web server */
	var xmlHttp = false;
	/*@cc_on @*/
	/*@if (@_jscript_version >= 5)
	try {
	  xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
	  try {
	    xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	  } catch (e2) {
	    xmlHttp = false;
	  }
	}
	@end @*/
	if (!xmlHttp && typeof XMLHttpRequest != 'undefined') {
	  xmlHttp = new XMLHttpRequest();
	}
	
	var email = document.getElementById("email").value;
	
	var url = "http://www.mytpo.com/email_duplicate_check.php?email=" + escape(email);
	var checkemail_fel = document.getElementById("checkemail_fel");
	var checkemail_suc = document.getElementById("checkemail_suc");
	var checkemail_dup = document.getElementById("checkemail_dup");
	
	xmlHttp.open("GET", url, true);
	// Setup a function for the server to run when it's done
	//xmlHttp.onreadystatechange = updatePage;
	// Send the request
	xmlHttp.send(null);

	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==4)
		{
			// Get data from the server's response	
			var response = xmlHttp.responseText;
				
			if(response == "success"){
				checkemail_suc.style.display = "block";
				checkemail_dup.style.display = "none";
				checkemail_fel.style.display = "none";
			}else if(response=="duplicate"){
				checkemail_dup.style.display = "block";
				checkemail_suc.style.display = "none";
				checkemail_fel.style.display = "none";
			}else{
				checkemail_fel.style.display = "block";
				checkemail_suc.style.display = "none";
				checkemail_dup.style.display = "none";
			}
		}
	}	
}