//Style Sheet Switcher version 1.0 Nov 9th, 2005
//Author: Dynamic Drive: http://www.dynamicdrive.com
//Usage terms: http://www.dynamicdrive.com/notice.htm

/***********************************************
* Style Sheet Switcher v1.0- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
***********************************************/

// Reference url: http://www.dynamicdrive.com/dynamicindex9/stylesheetswitcher.htm

function getCookie(Name) { 
	var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair
	if (document.cookie.match(re)) //if cookie found
		return document.cookie.match(re)[0].split("=")[1] //return its value
	return null
}

function setCookie(name, value, days) {
	var expireDate = new Date()
	//set "expstring" to either future or past date, to set or delete cookie, respectively
	var expstring=(typeof days!="undefined")? expireDate.setDate(expireDate.getDate()+parseInt(days)) : expireDate.setDate(expireDate.getDate()-5)
	document.cookie = name+"="+value+"; expires="+expireDate.toGMTString()+"; path=/";
	var selectedtitle=getCookie("mysheet");
	//alert("cookie being set to => " + selectedtitle);
}

function deleteCookie(name){
	setCookie(name, "moot");
	var selectedtitle = getCookie("mysheet");
	//alert("Cookie being deleted. value => " + selectedtitle );
}

function setStylesheet(title) {
	// creating stepping logic 
	var selectedtitle=getCookie("mysheet");
	//alert("cookie => " + selectedtitle + ", arg title => " + title);
	if( (selectedtitle == 'large-font') && (title == 'small-font') ) {
		// set back to default
		title = 'none';
		deleteCookie("mysheet");
		// cacheobj.disabled = false; //enable chosen style sheet
	} else if( (selectedtitle == 'small-font') && (title == 'large-font') ) {
		// set back to default
		title = 'none';
		deleteCookie("mysheet");
		//cacheobj.disabled = false; //enable chosen style sheet
	} else if( selectedtitle == null && title != null ) {
		//cacheobj.disabled = true;
		setCookie("mysheet", title, '30');
	}

	var selectedtitle=getCookie("mysheet");
	//alert("selectedtitle => " + selectedtitle + ", title => " + title);


	var i, cacheobj
	for(i=0; (cacheobj=document.getElementsByTagName("link")[i]); i++) {
		if(cacheobj.getAttribute("rel").indexOf("style") != -1 && cacheobj.getAttribute("title")) {
			cacheobj.disabled = true
		if(cacheobj.getAttribute("title") == title)
			cacheobj.disabled = false //enable chosen style sheet
		}
	}
}

function chooseStyle(styletitle, days){
	if (document.getElementById){
		setStylesheet(styletitle)
		//setCookie("mysheet", styletitle, days)
	}
}

function indicateSelected(element){ //Optional function that shows which style sheet is currently selected within group of radio buttons or select menu 
	var i
	if (selectedtitle!=null && (element.type==undefined || element.type=="select-one")){ //if element is a radio button or select menu
		var element=(element.type=="select-one") ? element.options : element
		for (i=0; i<element.length; i++){
			if (element[i].value==selectedtitle){ //if match found between form element value and cookie value
				if (element[i].tagName=="OPTION") //if this is a select menu
					element[i].selected=true
				else //else if it's a radio button
					element[i].checked=true
				break
			}
		}
	}
}

var selectedtitle=getCookie("mysheet")
//alert("Onload cookie -> " + selectedtitle);
if (document.getElementById && selectedtitle!=null) //load user chosen style sheet if there is one stored
setStylesheet(selectedtitle)

//window.load = alert("cookie => " + selectedtitle);