function writeOptions(startNumber, endNumber)
{
  var optionCounter;
  for (optionCounter = startNumber; optionCounter >= endNumber; optionCounter--)
  {
      document.write('<OPTION value=' + optionCounter + '>' + optionCounter);
  }
}

function writePriceOptions(startNumber, endNumber)
{
  var optionCounter;
  for (optionCounter = startNumber; optionCounter <= endNumber;)
  {
      document.write('<OPTION value=' + optionCounter + '>' + optionCounter);
	  optionCounter = optionCounter + 1000;
  }
}

function writekmOptions(startNumber, endNumber)
{
  var optionCounter;
  for (optionCounter = startNumber; optionCounter <= endNumber;)
  {
      document.write('<OPTION value=' + optionCounter + '>' + optionCounter);
	  optionCounter = optionCounter + 10000;
  }
}


function ctformcheck()
{
	var frm = document.contactform;
	var name = trim(frm.name.value);
	var phone = trim(frm.phone.value);
	var email = trim(frm.email.value);
	
	if (name=="" || phone=="" || email=="")
	{	  
		alert("Gelieve alle verplichte velden in te vullen!");
		return false
	} 

	if (frm.email.value!="")
	{
		if (frm.email.value.indexOf("@")==-1 || frm.email.value.indexOf(".")==-1 || frm.email.value.indexOf(" ")!=-1 || frm.email.value.length<6) 
		{
		  alert("Gelieve een correct e-mail adres in te geven!");
		  frm.email.focus();
		  return false
		}
	}
}

function trim(inputString) {
   // Removes leading and trailing spaces from the passed string. Also removes
   // consecutive spaces and replaces it with one space. If something besides
   // a string is passed in (null, custom object, etc.) then return the input.
   if (typeof inputString != "string") { return inputString; }
   var retValue = inputString;
   var ch = retValue.substring(0, 1);
   while (ch == " ") { // Check for spaces at the beginning of the string
      retValue = retValue.substring(1, retValue.length);
      ch = retValue.substring(0, 1);
   }
   ch = retValue.substring(retValue.length-1, retValue.length);
   while (ch == " ") { // Check for spaces at the end of the string
      retValue = retValue.substring(0, retValue.length-1);
      ch = retValue.substring(retValue.length-1, retValue.length);
   }
   while (retValue.indexOf("  ") != -1) { // Note that there are two spaces in the string - look for multiple spaces within the string
      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); // Again, there are two spaces in each of the strings
   }
   return retValue; // Return the trimmed string back to the user
}

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_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 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];}
}