document.write('换个心情：');
document.write('<img align=\"absmiddle\" src=\"image\/style_blue.gif\" onClick=\"mystyle(\'style_blue\');\" \/>');
document.write('<img align=\"absmiddle\" src=\"image\/style_pink.gif\" onClick=\"mystyle(\'style_pink\');\" \/>');
document.write('<img align=\"absmiddle\" src=\"image\/style_green.gif\" onClick=\"mystyle(\'style_green\');\" \/>');
document.write('<img align=\"absmiddle\" src=\"image\/style_orange.gif\" onClick=\"mystyle(\'style_orange\');\" \/>');

function SetCookie(name,value){
	var mymin = 30;
	var exp = new Date();
	exp.setTime(exp.getTime() + mymin*24*60*60*1000);
	document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
function mystyle(chstyle){
	SetCookie("youbb_style",chstyle);
	document.getElementById("myskin").href="template/youbb/"+chstyle+".css";
}