/* Stylesheet Switching
*******************************************************************************/
var stylesheet = {
	set : function(title) {
		var found = 0;
		for (var i = 0; (a = d.getElementsByTagName("link")[i]); i++) {
			if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
				a.disabled = true;
				if (a.getAttribute("title") == title) {
					a.disabled = false;
					found = 1;
				}
			}
		}
		if (found == 0) {
			title = this.getPreferred();
			if (title) {
				this.set(title);
			}
		}
	},
	getActive : function() {
		for (var i = 0; (a = d.getElementsByTagName("link")[i]); i++) {
			if (a.getAttribute("rel").indexOf("style") != -1
			&& a.getAttribute("title") && !a.disabled) {
				return a.getAttribute("title");
			}
		}
		return null;
	},
	getPreferred : function() {
		for (var i = 0; (a = d.getElementsByTagName("link")[i]); i++) {
			if (a.getAttribute("rel").indexOf("style") != -1
			&& a.getAttribute("rel").indexOf("alt") == -1
			&& a.getAttribute("title")) {
				return a.getAttribute("title");
			}
		}
		return null;
	}
}

/* Cookies
*******************************************************************************/

var cookie = {
	write : function(name,value,days) {
		if (days) {
			var date = new Date();
			date.setTime(date.getTime() + (days*24*60*60*1000));
			var expires = "; expires=" + date.toGMTString();
		} else {
			var expires = "";
		}
		d.cookie = name + "=" + value + expires + "; path=/";
	},
	read : function(name) {
		name += "=";
		var cr = d.cookie.split("; ");
		for (var i = 0, crL = cr.length; i < crL; i++) {
			var c = cr[i];
			if (c.indexOf(name) == 0) {
				return unescape(c.substring(name.length,c.length));
			}
		}
		return null;
	}
};

/* Style Switcher UI
*******************************************************************************/

function addStyleswitcher() {
	var switcher = d.getElementById("customise");
	var buttons = switcher.getElementsByTagName("a");

	for (var i = 0, bL = buttons.length; i < bL; i++) {
		buttons[i].onclick = function() {
			this.blur();
			stylesheet.set(this.hash.substring(1));
			return false;
		};
	}
}

/* supporto menu tendina per IE 
*******************************************************************************/

function menuHover() {
	var menuItems = d.getElementById("nav").getElementsByTagName("LI");

	for (var i = 0, miL = menuItems.length; i < miL; i++) {
		menuItems[i].onmouseover = function() {
			this.className = "mnhover";
		}
		menuItems[i].onmouseout = function() {
			this.className = "";
		}

		// Add alpha transparencey in IE 5.5+
		var hasSub = menuItems[i].getElementsByTagName("UL")[0];
		if (hasSub && (typeof hasSub.filters == "object")) {
			hasSub.style.filter = "alpha(opacity=90)";
		}
	}
}

/* Search Form
*******************************************************************************/

function searchForm() {
	var sb = d.getElementById("s");
	sb.defVal = "Search";
	sb.value = sb.defVal;
	sb.onfocus = function() {
		this.className = "focus";
		if (this.value == this.defVal) {
			this.value = '';
		}
	};
	sb.onblur = function() {
		this.className = "";
		if (isempty(this.value)) {
			this.value = this.defVal;
		}
	};
}





/* Per IE: mantieni il layout
*******************************************************************************/

function checkMinWidth() {
	var w = d.getElementById("main");
	if (w.offsetWidth < 710) {
		fixIEwidth = 1;
		stylesheet.set("fixed");
	}
}



/* Toggle Expandable/Expandedw
*******************************************************************************/
function toggleExpandable( ele ) {
    ele.className = ( ele.className == 'expanded' ) ? 'expandable':'expanded';
}

function toggleExpandableMap( ele ) {
    ele.className = ( ele.className == 'expandedmap' ) ? 'expandablemap':'expandedmap';
}