function bookmarkthis(title,url) {
  if (window.sidebar) { // firefox
     window.sidebar.addPanel(title, url, "");
  } else if (document.all) { // IE
     window.external.AddFavorite(url, title);
  } else if (window.opera && window.print) { // opera
     var elem = document.createElement('a');
     elem.setAttribute('href',url);
     elem.setAttribute('title',title);
     elem.setAttribute('rel','sidebar');
     elem.click();
  }
}

function setcurrency(currency)
{
        window.location.href = "/setcurrency.php?id=" + currency + "&page=" + window.location.href;
}
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_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_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 MM_findObj(n, d) { //v4.0
  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 && document.getElementById) x=document.getElementById(n); return x;
}

function hasSpaces(s) {
    containsSpaces = false;
    for (i=0; i < s.length; i++){
        if (s.charAt(i) == " "){
            containsSpaces = true;
            break;
        }
    }
     return (containsSpaces);
}

function isEmpty(s)
{   
   return ((s == null) || (s.length == 0))
}


function isNumeric(s)

{   
    var i;

    var reNumeric = /^[0-9. ]+$/

    if (isEmpty(s))
       if (isNumeric.arguments.length == 1) return false;
       else return (isNumeric.arguments[1] == true);

    else 
    {
       return reNumeric.test(s)
    }
} 

function isAlphanumeric (s)
{   
    var i;
    var reAlphanumeric = /^[a-z0-9]+$/

    if (!isEmpty(s))
    { 
        return reAlphanumeric.test(s)
    }
    return true;
}


function isAlpha (s)
{   
    var i;
    var reAlpha = /^[a-zA-Z]+$/

    if (!isEmpty(s)) 
    {
       return reAlpha.test(s)
    }
    return true;
}

//---------------------------------------------------------------
function isValid(field) 
{
   var reValid = /^[a-zA-Z0-9-_.@' ]+$/;
    if (!isEmpty(field))
    {
        return reValid.test(field)
    }
    return true;
}
//---------------------------------------------------------------- 
function isemailValid(field) 
{
   var reValid = /^[a-zA-Z0-9-_.@ ]+$/;
    if (!isEmpty(field))
    {
       return reValid.test(field)
    }
    return true;
}