// JavaScript Document

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function hintBlur(input, text) {
	if(input.value == "") input.value = text;			
}

function hintFocus(input, text) {
	if(input.value == text) input.value = "";			
}

function goTo(id, fieldId, formName, action) {
	elem = document.getElementById(fieldId);
	elem.value = id
	if(action)
		document.forms[formName].action = action;	
	document.forms[formName].submit();
}
// input che devono essere definiti nel form:
//	userid, pwd, ran
function md5_that(formName) {
	ran       = Math.random()*10000;
	fran      = Math.floor(ran);
	sran      = fran.toString();
	ran2      = hex_md5(sran);
	
	userid    = hex_md5(document.forms[formName].userid.value);
	passw     = hex_md5(document.forms[formName].pwd.value);
	comp      = hex_md5(userid + passw + ran2);
	
	document.forms[formName].ran.value   = sran;
	document.forms[formName].pwd.value   = comp;
}

function goUrl(url) {
	window.location = url;
	//history.back(1);
}

function checkEmail(email) {
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (!filter.test(email.value)) 
		return false;
	return true;	
}