// JavaScript Document

function setupDes() {
    // 種付け作業
    var textarea = document.getElementsByTagName("textarea");
    for (i = 0; i < textarea.length; i++) {
        if (textarea[i].className.search("nodes") < 0) {
            if (textarea[i].value == textarea[i].defaultValue) {textarea[i].className += " ondes"; }
            textarea[i].onfocus = function() {offDes(this); }
            textarea[i].onblur = function() {onDes(this); }
        }
    }
    var input = document.getElementsByTagName("input");
    for (i = 0; i < input.length; i++) {
        if ((input[i].className.search("nodes") < 0) && ((input[i].getAttribute("type") == "text")||(input[i].getAttribute("type") == null))) {
            if (input[i].value == input[i].defaultValue) {input[i].className += " ondes"; }
            input[i].onfocus = function() {offDes(this); }
            input[i].onblur = function() {onDes(this); }
        }
    }
    return;
}

function offDes(from) {
    if (from.className.search("ondes") < 0) {return 0;}
    from.className = from.className.replace(/ondes/, "");
    from.value = "";
    return 1;
}
function onDes(from) {
    if (from.value != "") {return 0;}
    from.className += " ondes";
    from.value = from.defaultValue;
    return 1;
}


var tab = {
	init: function(){
		var tabs = this.setup.tabs;
		var pages = this.setup.pages;
		
		for(i=0; i<pages.length; i++) {
			if(i !== 0) pages[i].style.display = 'none';
			tabs[i].onclick = function(){ tab.showpage(this); return false; };
		}
	},

	showpage: function(obj){
		var tabs = this.setup.tabs;
		var pages = this.setup.pages;
		var num;
		
		for(num=0; num<tabs.length; num++) {
			if(tabs[num] === obj) break;
		}

		for(var i=0; i<pages.length; i++) {
			if(i == num) {
				pages[num].style.display = 'block';
				tabs[num].className = 'present';
			}
			else{
				pages[i].style.display = 'none';
				tabs[i].className = null;
			}
		}
	}
}