function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if (node == null)
		node = document;
	if (tag == null)
		tag = '*';
	var els = document.body.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if (pattern.test(els[i].className)) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function isie6() {
	var agt=navigator.userAgent.toLowerCase();
	var is_major = parseInt(navigator.appVersion);
	var is_minor = parseFloat(navigator.appVersion);
	var is_ie = (agt.indexOf("msie") != -1);
	var is_ie6 = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) );
	return is_ie6;
}

setminwidth = function(){
	if( isie6()){
		var id="contenitore";
		element = document.getElementById(id);
		var widthok = document.body.clientWidth < 800 ? "770px":"auto";
		element.style.width = widthok;
	}
}

sfFocus = function() {
	if (isie6()) {
		var sfEls = document.getElementsByTagName("a");
		for (var i=0; i<sfEls.length; i++) {
			if (sfEls[i].className=="focus") {
				sfEls[i].onfocus=function() {
					this.style.color="#fff";
					this.style.outline="none";
				}
				sfEls[i].onmouseover=function() {
					this.style.color="#fff";
					this.style.outline="none";
				}
				sfEls[i].onblur=function() {
					this.style.color="#000";
					this.style.outline="none";
				}
				sfEls[i].onmouseout=function() {
					this.style.color="#000";
					this.style.outline="none";
				}
			}
			else if (sfEls[i].className=="istituzionale") {
				sfEls[i].onfocus=function() {
					this.style.color="#000";
					this.style.background="#d3d3d3";
					this.style.outline="none";
				}
				sfEls[i].onmouseover=function() {
					this.style.color="#000";
					this.style.background="#d3d3d3";
					this.style.outline="none";
				}
				sfEls[i].onblur=function() {
					this.style.color="#fff";
					this.style.background="#0e722a";
					this.style.outline="none";
				}
				sfEls[i].onmouseout=function() {
					this.style.color="#fff";
					this.style.background="#0e722a";
					this.style.outline="none";
				}
			}
		}
	}
}

if (window.attachEvent) window.attachEvent("onresize", setminwidth);
if (window.attachEvent) window.attachEvent("onload", sfFocus);