var XMLHttp = null;
function GetXmlHttpObject(){ 
	try{
		XMLHttp = new ActiveXObject("Msxml2.XMLHTTP");
	}catch(e1){
 		try{
 			XMLHttp = new ActiveXObject("Microsoft.XMLHTTP");
 		}catch(e2){}
	}
	
	if( XMLHttp == null ){
		XMLHttp = new XMLHttpRequest();
	}return XMLHttp;
}

function isEmpty( name ){

	var item = document.getElementById(name).value;
	document.getElementById(name).value = strReplace(item);
	return ( document.getElementById(name).value == "" )?true:false;

}

function strReplace( str ){

	str = str.replace(/\'/g, "");	
	str = str.replace(/\"/g, "");	
	str = str.replace(/^\s*|\s*$/g, "");
	return str;

}

/*字元限0~9,a~Z*/
function chkStr( name ){
	var str = document.getElementById(name).value;
	var k = 0;
	if( str != "" ){
		for( var i = 0; i < str.length; i++ ){
			var co = str.charCodeAt(i);
			if( co == 95 || co == 45 || co == 46 || co == 58 || (co >= 48 && co <= 57) || (co >= 65 && co <= 90)||(co >= 97 && co <= 122) || co == 92 || co == 47){
				//正確格式
				k++;
			}
		}
		return( k == str.length )?true:false;
	}return false;
}

/*E-mail帳號檢查*/
function checkmail(str){	
	var j=0;
	var at="@";
	var dot=".";
	var lat=str.indexOf(at);	
	var lstr=str.length;
	var ldot=str.indexOf(dot);		
	
	if (str.indexOf(at)==-1)j++;
	//if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)j++;
	//if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)j++;
	//if (str.indexOf(at,(lat+1))!=-1)j++;
	//if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot)j++;
	//if (str.indexOf(dot,(lat+2))==-1)j++;
	//if (str.indexOf(" ")!=-1)j++;
	if(j>0){return false;}else{return true;}
}