function ch_field(obj,len,next_obj)
{ 
  if(obj.value.length==len)
  {
    next_obj.focus();
  } 
} 

function checkExpand() {
    var sElem = event.srcElement;
    if("" != sElem.id) {
        var ch = sElem.id + "Child";
        var el = document.all[ch];
        if(null != el) el.style.display = 
            "none" == el.style.display ? "" : "none";
        event.returnValue = false;
    }
}  

function ValidateNumber()   // number plus dot (include . )
{
var e1 = event.srcElement;
var num ="0123456789.";
event.returnValue = true;
for (var i=0;i<e1.value.length;i++)
{
if(-1 == num.indexOf(e1.value.charAt(i)))
event.returnValue = false;
}
if (!event.returnValue)
e1.className="badvalue";
else
e1.className="";
}

function onlyNumber()
{
	if ( event.keyCode<48 || event.keyCode>57 )
		event.returnValue=false;
}


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];}
}