function setStylesheet(id) {
	$('link[rel="stylesheet"][href^="wellmer"]').remove();
	
	var link=document.createElement('link');
	link.setAttribute('rel', 'stylesheet');
	link.setAttribute('type', 'text/css');
	link.setAttribute('href', 'wellmer'+String(id)+'.css');
	$('head').append(link);
}

if(typeof String.prototype.trim !== 'function') {
	String.prototype.trim = function() {
		return this.replace(/^\s+|\s+$/g, ''); 
	}
}

function setCookie(key, value) {
	var expires = new Date();
	expires.setHours(expires.getHours()+2);
	document.cookie = key + '=' + value + ';path=/;expires=' + expires.toUTCString();
}
function getCookie(key) {
	kvps = document.cookie.split(';');
	for(var i = 0; i < kvps.length; i++) {
		var kva = kvps[i].split('=');
		if( kva[0].trim() == key ) return kva[1];
	}
}

var fi;
var fadeMax;
var fadeTime = 1000;
var fadeDelay = 4000;
function fadeNext() {
	$('.slide_img').eq(fi).fadeOut(fadeTime, 'linear');
	if(fi<fadeMax) fi++; else fi=0;
	$('.slide_img').eq(fi).fadeIn(fadeTime, 'linear');
	setTimeout(fadeNext, fadeDelay);
	setCookie('fi',fi);
}
function fadeStart() {
	fi = Number(getCookie('fi'));
	if(isNaN(fi)) fi = 0;
	fadeMax = $('.slide_img').length-1;
	$('.slide_img').eq(fi).show();
	setTimeout(fadeNext, fadeDelay);
}

$(document).ready(function(){
	/*$('select[name="style"]').change(function(){
		setStylesheet(this.value);
	});*/
	if(($('body').height() - window.innerHeight) < 400) {
		document.getElementById('link_top').style.display = 'none';
	}
	
	//$('.slide_img:first').show();
	fadeStart();
});