function checkEmail(ob){
	ob.value=ob.value.replace(" ","");
	ob.value=ob.value.replace(" ","");
	ob.value=ob.value.replace(" ","");
	ob.value=ob.value.replace(" ","");
	ob.value=ob.value.replace(" ","");
	ob.value=ob.value.replace("~","");	
	ob.value=ob.value.replace("!","");	
	ob.value=ob.value.replace("#","");		
	ob.value=ob.value.replace("$","");
	ob.value=ob.value.replace("%","");
	ob.value=ob.value.replace("^","");
	ob.value=ob.value.replace("&","");
	ob.value=ob.value.replace("*","");
	ob.value=ob.value.replace("(","");
	ob.value=ob.value.replace(")","");
	return true;
}


function vldemail(ob) {
	if (ob.value.indexOf("@")==-1) {
		ErrMsg = ErrMsg+"您的email格式有誤(Incorrect email format)!\n";
		ob.select();
		return false;		
	} else if (ob.value.indexOf(".")==-1) {
		ErrMsg = ErrMsg+"您的email格式有誤(Incorrect email format)!\n";
		ob.select();
		return false;
	}
	return true; 
}


function checkdata0() {

	ErrMsg = "";

	if(document.edm.email.value=="") {
		ErrMsg = ErrMsg+"請輸入 您的email!\n";
		document.edm.email.focus();
	}else{
		vldemail(document.edm.email);
		checkEmail(document.edm.email);
	}

	if(ErrMsg!="")	{
		alert(ErrMsg);
		return false;
	} else {
		return true;
	}

}


function checkdata1() {

	ErrMsg = "";

	if(document.edm.email.value=="") {
		ErrMsg = ErrMsg+"Please input your email!\n";
		document.edm.email.focus();
	}else{
		vldemail(document.edm.email);
		checkEmail(document.edm.email);
	}

	if(ErrMsg!="")	{
		alert(ErrMsg);
		return false;
	} else {
		return true;
	}

}


function show_menu(show_obj) {

	var sobj=document.getElementById(''+show_obj+'');

	if( sobj.style.display == "none") { 
		sobj.style.display = "block"; 
		//sobj.style.top=eval(document.body.scrollTop+event.y-100);
		//sobj.style.left=eval(document.body.scrollLeft+event.x+30);
	} else { 
		sobj.style.display = "none"; 
	}
}