$(function(){
    var size = getCookie('size');
    if (size != "") {
// alert('debug:' + size);
		setTextSize(size);
    }

    $('#gnv_search').click(function(){
    	if($('#search_text').val()=='') {
    		alert('Please input search keywords.')
    		return false;
    	}
    	$('#form_search').submit();
    	return false;
    });
});

function changeTextSize() {

    var size;
    var currentSize = document.getElementsByTagName("body")[0].style.fontSize;
    if (currentSize == "150%") {
		size = "170%";
    } else if (currentSize == "170%") {
		size = "100%";
    } else {
		size = "150%";
    }

    setTextSize(size);
    location.reload(); // for IE...
	return false;
}



function setTextSize(size){

    var textsize = 'LARGER';
	if (size == "170%") {
    	textsize = 'STANDARD';
    }
	$('#gnv_textsize').text(textsize);

    document.getElementsByTagName("body")[0].style.fontSize = size;
    setCookie('size', size);
}

function isMac() {
    if (navigator.appVersion.indexOf("Macintosh") != -1) {
	return true;
    } else {
        return false;
    }
}

function isMSIE() {
    if (navigator.appVersion.indexOf("MSIE") != -1) {
        return true;
    } else {
        return false;
    }
}

function getElement(id) {
    if(document.getElementById) {
        return document.getElementById(id);
    } else if(document.all){
        return document.all[id];
    }

}

function setCookie(key, value){
    var exp = new Date();
    exp.setTime(exp.getTime() + 31536000000);
//    document.cookie = escape(key) + "=" + escape(value) + "; domain=.ccdn.jp; path=/1/" + "; expires=" + exp.toGMTString();
    document.cookie = escape(key) + "=" + escape(value) + "; domain=.plextalk.com; path=/; expires=" + exp.toGMTString();
//    document.cookie = escape(key) + "=" + escape(value) + "; expires=" + exp.toGMTString();
}

function getCookie(key){
    var cklng = document.cookie.length;
    var ckary = document.cookie.split("; ");
    var value = "";
    var match_key = escape(key) + "=";
    var match_length = match_key.length;
    var i = 0;

    while (ckary[i]){
	if (ckary[i].substr(0,match_length) == match_key){
	    value = ckary[i].substr(match_length,ckary[i].length);
	    break;
	}
	i++;
    }
    return unescape(value);
}