function verify() {
var themessage = "You are required to complete the following fields: ";
if (document.sampleform.first_name.value=="" || document.sampleform.first_name.value=="First name") {
themessage = themessage + " - First Name";
}
if (document.sampleform.last_name.value=="" || document.sampleform.last_name.value=="Last name") {
themessage = themessage + " -  Last Name";
}
if (document.sampleform.country.value=="") {
themessage = themessage + " -  Country";
}
if (document.sampleform.email.value=="") {
themessage = themessage + " -  E-mail";
}
if (document.sampleform.uploadfile.value=="") {
themessage = themessage + " -  CV or Resume";
}
if (document.sampleform.motivation_letter.value=="") {
themessage = themessage + " -  Motivation";
}
//alert if fields are empty and cancel form submit
if (themessage == "You are required to complete the following fields: ") {
document.sampleform.submit();
}
else {
alert(themessage);
return false;
   }
}

// tbv stockquotes pagina
function shiftView(toShow)
{
 switch(toShow) 
 {
  case '1': 
  document.getElementById('stat1').className='ploegen'; 
  document.getElementById('stat2').className='ploegenH';
  document.getElementById('stat3').className='ploegenH';
  document.getElementById('stat4').className='ploegenH';
  break;
  case '2': 
  document.getElementById('stat1').className='ploegenH'; 
  document.getElementById('stat2').className='ploegen';
  document.getElementById('stat3').className='ploegenH';
  document.getElementById('stat4').className='ploegenH';
  break;
  case '3': 
  document.getElementById('stat1').className='ploegenH'; 
  document.getElementById('stat2').className='ploegenH';
  document.getElementById('stat3').className='ploegen';
  document.getElementById('stat4').className='ploegenH';
  break;
  case '4': 
  document.getElementById('stat1').className='ploegenH'; 
  document.getElementById('stat2').className='ploegenH';
  document.getElementById('stat3').className='ploegenH';
  document.getElementById('stat4').className='ploegen';
  break;
    }
 
}

/********************************************************************************
form validation
********************************************************************************/
function checkEmail(myForm) {
if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(myForm.email.value)){
return (true)
}
alert("Invalid E-mail Address! Please re-enter.")
return (false)
}
/********************************************************************************
open applications
********************************************************************************/
function MM_findObj(n, d) { //v3.ppk
   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]; if(!(x=d[n])&&d.getElementById) x=d.getElementById(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);
   return x;
}
function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
   obj.visibility=v; }
}

/***********************************************************************
tankstorage locations
***********************************************************************/
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function MM_findObj(n, d) { //v3.ppk
   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]; if(!(x=d[n])&&d.getElementById) x=d.getElementById(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);
   return x;}
function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

//-->