function chkNonBlank(val) {
	if (val==null || val=="") {
		return false;
	}
	return true;
}

function chkEmail(val) {
	var ok = chkNonBlank(val);
	if (!ok) {		
		alert("請輸入你的電郵！");
		document.forms['Subscription'].email.focus();
		return false;
	}
	var idx = val.indexOf("@");
	var ok = (idx>0);
	if (ok) {
		idx1 = val.lastIndexOf(".");
		if (idx1 < idx) ok = false;
		if (ok && (idx1 >= (val.length-2))) ok = false;
	}
	if (!ok) {
		alert("電郵格式不正確，請重新輸入！");
		document.forms['Subscription'].email.focus();
		return false;
	}
	return true;
}

function toSubmit (){
	if (window.event.keyCode == 13) return false;
}
function Subscription(num){
	var SiteName ="香港差傳事工聯會"; 	
	if (!chkEmail(document.getElementById("email").value))return ;
	if (num =='2') if (confirm("你確定要取消訂閱"+SiteName+"期刊?")==false ) return  ;
	if (num =='1') if (confirm("你確定要訂閱"+SiteName+"期刊?")==false ) return  ;
	document.forms['Subscription'].DFid.value=num;
	document.forms['Subscription'].submit();
}


function setLocation(url, Pid , Cid , page , p , charset , version  ){
document.write("<input type='hidden' name='DFid' value=''>");
document.write("<input name='url'  type='hidden' value='"+url+"'>");
document.write("<input name='Pid'  type='hidden'value='"+Pid+"' > ");
document.write("<input name='Cid'  type='hidden' value='"+Cid+"' > ");
document.write("<input name='charset' type='hidden' value='"+charset+"'> ");
document.write("<input name='version' type='hidden' value='"+version+"'>");

document.write("<table cellpadding=\"2\" cellspacing=\"0\" border=\"0\" align=center><tr ><td>");
document.write("<table cellpadding=\"0\" cellspacing=\"0\" border=\"0\">");
document.write("<tr ><td colspan=2></td></tr>");
document.write("<tr><td width=30>");
document.write("<span class=\"subscribTxt\">姓名</span></td><td align=center><INPUT id=\"Name\" name='Name' onblur=\"this.style.backgroundColor='#ffffff';\" onmouseover=this.focus() style=\"BORDER: #666666 1px solid; BACKGROUND-COLOR: #ffffff\" onfocus=\"this.style.backgroundColor='#EEEEEE'\" size=13  onKeyPress='return toSubmit();' ></td></tr>");
document.write("<tr><td>");
document.write("<span class=\"subscribTxt\">電郵</span></td><td  align=center><INPUT id=\"email\" name='email' onblur=\"this.style.backgroundColor='#ffffff';\" onmouseover=this.focus() style=\"BORDER: #666666 1px solid; BACKGROUND-COLOR: #ffffff\" onfocus=\"this.style.backgroundColor='#EEEEEE'\" size=13  onKeyPress='return toSubmit();' ></td></tr>");
document.write("<tr ><td colspan=2><img src=\"/Template/Shared/big5_hkscs/spacer.gif\" border=0 height=5></td></tr>");
document.write("<tr><td colspan=3 align=center ><a  class=\"inputButton\"  href=\"javascript:Subscription('1')\"><img src=\"/Template/Shared/big5_hkscs/bt-newsletter.gif\" border=0></a>");
document.write("&nbsp;&nbsp;&nbsp;<a class=\"inputButton\"  href=\"javascript:Subscription('2')\"><img src=\"/Template/Shared/big5_hkscs/bt-newsletter-cancel.gif\" border=0></a>");
document.write("</td></tr></table>");
document.write("</td></tr></table>");
}