////文字拡大・縮小//////////////////////////////////////////////////////////////////////////////
var target = "tmplt07_container";
//
function setCookie(s){
	cName = "FontSize=";
	exp = new Date();
	exp.setTime(exp.getTime() + 31536000000);
	document.cookie = cName + s + "; path=/; expires=" + exp.toGMTString();
}
//
function getCookie(){
	zoom = "";
	cName = "FontSize=";
	tmpCookie = document.cookie + ";";
	s = tmpCookie.indexOf(cName);
	if (s != -1)
	{
		e = tmpCookie.indexOf(";", s);
		zoom = tmpCookie.substring(s + cName.length, e);
		document.getElementById(target).style.fontSize = zoom;
	} else {
		document.getElementById(target).style.fontSize = "100%";
	}
}
//
function textSizeUp(){
	currentSize = document.getElementById(target).style.fontSize;
	selectSize = "";
	if ( currentSize=="100%" || currentSize=="1.0em"){
		selectSize = "120%";
	} else if(currentSize=="120%") {
		alert("これ以上文字を拡大することはできません。");
		selectSize = "120%";
	} else {
		selectSize = "100%";
	}
	document.getElementById(target).style.fontSize = selectSize;
	setCookie(selectSize);
}

function textSizeDown(){
	currentSize = document.getElementById(target).style.fontSize;
	selectSize = "";
	if ( currentSize=="100%" || currentSize=="1.0em"){
		selectSize = "80%";
	} else if(currentSize=="80%") {
		alert("これ以上文字を縮小することはできません。");
		selectSize = "80%";
	} else {
		selectSize = "100%";
	}
	document.getElementById(target).style.fontSize = selectSize;
	setCookie(selectSize);
}

function writeHeader(){
	document.write('<table border="0" align="right" cellspacing="0" cellpadding="0" id="tmplt07_HDtxt">');
	document.write('<tr>');
	document.write('<td width="160" align="right" valign="top" id="tmplt07_HDtxtEDGE"><p><img src="http://www.pref.shizuoka.jp/shared/images/07_txt_ttl.jpg" alt="文字のサイズ変更" width="100" height="15"></p></td>');
	document.write('<td align="right" valign="top" class="tmplt07_HDtxtSIZE"><p><a href="javascript:textSizeUp();"><img src="http://www.pref.shizuoka.jp/shared/images/07_txt_big.jpg" alt="" width="15" height="15">拡大</a></p></td>');
	document.write('<td align="right" valign="top" class="tmplt07_HDtxtSIZE"><p><a href="javascript:textSizeDown();"><img src="http://www.pref.shizuoka.jp/shared/images/07_txt_sml.jpg" alt="" width="15" height="15">縮小</a></p></td>');
	document.write('</tr>');
	document.write('</table>');
}