var ms = navigator.appVersion.indexOf("MSIE");
var ie4 = (ms>0) && (parseInt(navigator.appVersion.substring(ms+5, ms+6)) >= 4)
var nesc = navigator.appName.lastIndexOf("Netscape"); //一致した位置(0)を返す
var nesc4 = (nesc >= 0) && (parseInt(navigator.appVersion.substring(0,2)) >= 4);


function fullscreen(url){
	if (nesc4){
    	newwindow = window.open(url,"newwindow",
"scrollbars,width=" + window.screen.width + ",height=" + window.screen.height);
		newwindow.moveTo(0,0);
		newwindow.focus();

	}else if (ie4){
		window.open(url,"screen","fullscreen=yes");

	}else{
		location.href="url";
	}
}


function preview(dir){
	url_str = "../view.php?dir="+dir;
	fullscreen(url_str);
}

function addEvent(elm,listener,fn){
	try{
		elm.addEventListener(listener,fn,false);
	}catch(e){
		elm.attachEvent("on"+listener,fn);
	}
}


addEvent(window, "load", 
	function(){
		var elm = document.getElementById('kwd');
		if(elm){
			elm.onchange = function(){
				changeKeywordFiled(elm);
			}
			elm.onfocus = function(){
				this.style.backgroundImage = "none";
			}
			changeKeywordFiled(elm);
		}
	}
);

function changeKeywordFiled(elm){
	if(elm.value){
		elm.style.backgroundImage = "none";
	}else{
		elm.style.backgroundImage = "url(img/kwd_bg.gif)";
		elm.style.backgroundRepeat  = "no-repeat";
		
	}
}