//Document Text Resizer script (May 14th, 08'): By JavaScript Kit: http://www.javascriptkit.com

var documenttextsizer = {

	prevcontrol: '', //remember last control clicked on/ selected
	existingclasses: '',

	setpageclass: function(control, newclass) {

		if (this.prevcontrol != '')
			this.css(this.prevcontrol, 'selectedtoggler', 'remove') //de-select previous control, by removing 'selectedtoggler' from it
		document.documentElement.className = this.existingclasses + ' ' + newclass //apply new class to document
		this.css(control, 'selectedtoggler', 'add') //select current control
		this.setCookie('pagesetting', newclass, 5) //remember new class added to document for 5 days
		this.prevcontrol = control
	},

	css: function(el, targetclass, action) {

		var needle = new RegExp("(^|\\s+)" + targetclass + "($|\\s+)", "ig")
		if (action == "check")
			return needle.test(el.className)
		else if (action == "remove")
			el.className = el.className.replace(needle, "")
		else if (action == "add")
			el.className += " " + targetclass
	},

	getCookie: function(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
	},

	setCookie: function(name, value, days) {
		if (typeof days != "undefined") { //if set persistent cookie
			var expireDate = new Date()
			var expstring = expireDate.setDate(expireDate.getDate() + days)
			document.cookie = name + "=" + value + "; path=/; expires=" + expireDate.toGMTString()
		}
		else //else if this is a session only cookie
			document.cookie = name + "=" + value
	},

	setup: function(targetclass) {
		this.existingclasses = document.documentElement.className //store existing CSS classes on HTML element, if any
		var persistedsetting = this.getCookie('pagesetting')
		if(persistedsetting == null) persistedsetting = 'normalview';
		var alllinks = document.getElementsByTagName("a")
		for (var i = 0; i < alllinks.length; i++) {
			if (this.css(alllinks[i], targetclass, "check")) {
				if (alllinks[i].getAttribute("rel") == persistedsetting) //if this control's rel attribute matches persisted doc CSS class name
					this.setpageclass(alllinks[i], alllinks[i].getAttribute("rel")) //apply persisted class to document
				alllinks[i].onclick = function() {
					documenttextsizer.setpageclass(this, this.getAttribute("rel"))
					return false
				}
			}
		}
	}

}