function cambia_image(dim){
   photo_image = 'image/'+document.getElementById("photo").value;
   if (document.getElementById("photo").value=='') {
     if (dim==70) photo_image = 'img/adm/dim70.gif';
     else photo_image = 'img/adm/dim240.gif';
   }
   document.getElementById("thumb").style.backgroundImage = "url('"+photo_image+"')";
//   alert ('url(image/'+document.getElementById("photo").value+')');
}
function cambia_foto(){
   directory = parseInt(document.getElementById("directory").selectedIndex);
   directory = '/'+document.getElementById("directory").options[directory].text;
   if (directory=="/image (default)") directory="";
   pippo = parseInt(document.getElementById("image").selectedIndex);
   pippo = document.getElementById("image").options[pippo].text;
   
//   alert('image'+directory+'/'+pippo);
   document.getElementById("thumb").style.backgroundImage = 'url(image'+directory+'/'+pippo+')' ;
}
function cambia_icona(){
   directory = parseInt(document.getElementById("dir").selectedIndex);
   directory = '/'+document.getElementById("dir").options[directory].text;
   if (directory=="/image (default)") directory="";
   pippo = parseInt(document.getElementById("icon").selectedIndex);
   pippo = document.getElementById("icon").options[pippo].text;
   
   // alert('image'+directory+'/'+pippo);
   document.getElementById("thumb").style.backgroundImage = 'url(image'+directory+'/'+pippo+')' ;
}

function InsertImage(rte, command) {
	InsertImg = popUpWin('scripts/add_image.php?obj=photo', 'InsImage', 360, 180, '');
}
function insertStringa(stringa,elemento) {
	document.getElementById(elemento).value = stringa;
}
function popUpWin (url, win, width, height, options) {
	var leftPos = (screen.availWidth - width) / 2;
	var topPos = (screen.availHeight - height) / 2;
	options += 'width=' + width + ',height=' + height + ',left=' + leftPos + ',top=' + topPos;
	return window.open(url, win, options);
}

function cambia(z){
    if (z=="scala") {
       dimensione = document.getElementById("scala").value;
       if (dimensione=="") dimensione=3;
       //alert(dimensione);
       document.getElementById("segna").style.width = (dimensione*70)+"px";
       document.getElementById("segna").style.height = (dimensione*70)+"px";
    } else {
       avviso="";
       eval("pos=document.getElementById(\"coord_"+z+"\").value");
       if (pos=="") pos=0;
       if (!isFinite(pos)) {
          avviso="il valore inserito non è valido";
       }
       eval("document.getElementById('segna').style."+z+"='"+pos+"px';");
       //alert("document.getElementById('segna').style."+z+"="+pos+"px");
       eval("document.getElementById(\"coord_"+z+"\").value=pos");
       if (avviso!="") alert(avviso);
    }
 }
  function controlla() {
     cambia('scala');
     cambia('left');
     cambia('top');
  }
   function iMouse(evnt) {
      if (document.all) {
         Ypos = evnt.offsetY;
         Xpos = evnt.offsetX;
      } else {
         Ypos = evnt.pageY - document.getElementById("finestra").offsetTop;
         Xpos = evnt.pageX - document.getElementById("finestra").offsetLeft;
      }
      document.getElementById("coord_left").value = Xpos;
      document.getElementById("coord_top").value = Ypos;
      cambia('left');
      cambia('top');
   }