width = screen.availWidth-10; 
height = screen.availHeight-30;
awidth = ((width-770)/2);
aheight = ((height-540)/2);
picnumber = 1;
videonumber = 1;

var isMac = (navigator.appVersion.indexOf("Mac")!=-1) ? true : false;

function Is() {
  agent       = navigator.userAgent.toLowerCase();
  this.major  = parseInt(navigator.appVersion);
  this.minor  = parseFloat(navigator.appVersion);
  
  this.ns     = ((agent.indexOf('mozilla')    != -1) &&
                 (agent.indexOf('spoofer')    == -1) &&
                 (agent.indexOf('compatible') == -1) &&
                 (agent.indexOf('opera')      == -1) &&
                 (agent.indexOf('webtv')      == -1) &&
                 (agent.indexOf('hotjava')    == -1));

  this.ns4    = (this.ns && (this.major      ==  4));
  this.ns6    = (this.ns && (this.major      >=  5));

  this.ie     = ((agent.indexOf("msie")      != -1) &&
                 (agent.indexOf("opera")     == -1));

  this.ie4    = (this.ie && (this.major      ==  4) &&
                (agent.indexOf("msie 4")     != -1));

  this.ie5    = (this.ie && (this.major      ==  4) &&
                (agent.indexOf("msie 5.")    != -1) &&
                (agent.indexOf("msie 5.5")   == -1) &&
                (agent.indexOf("mac")        == -1));

  this.iem5   = (this.ie && (this.major      ==  4) &&
                (agent.indexOf("msie 5.")    != -1) &&
                (agent.indexOf("mac")        != -1));

  this.ie55   = (this.ie && (this.major      ==  4) &&
                (agent.indexOf("msie 5.5")   != -1));

  this.ie6    = (this.ie && (this.major      ==  4) &&
                (agent.indexOf("msie 6.")    != -1));

  this.nsdom  = (this.ns4  || this.ns6);
  this.ie5dom = (this.ie5  || this.iem5   || this.ie55);
  this.iedom  = (this.ie4  || this.ie5dom || this.ie6);
  this.w3dom  = (this.ns6  || this.iem5
                           || this.ie55
                           || this.ie6);
}

var is = new Is();

function open_window(path, width, height, name, scroll)
{
	dummy = window.open(path,name,'width='+width+',height='+height+',left='+awidth+',top='+aheight+ ',toolbar=no,menubar=no,resizable=yes,status=no,alwaysRaised=yes,scrollbars='+scroll);
}

function IsNumeric(sText)
{
	var ValidChars = "0123456789./-";
	var IsNumber=true;
	var Char;
	
	for (i = 0; i < sText.length && IsNumber == true; i++) { 
		Char = sText.charAt(i); 
		if (ValidChars.indexOf(Char) == -1) {
			IsNumber = false;
		}
	}
	return IsNumber;
}

function ctformcheck(send)
{
	var frm = document.contactfrm;
	var firstname = trim(frm.firstname.value);	
	var lastname = trim(frm.lastname.value);
	var address = trim(frm.address.value);		
	var zipcode = trim(frm.zipcode.value);
	var city = trim(frm.city.value);
	var phone = trim(frm.phone.value);
	var email = trim(frm.email.value);
	
	if (firstname=="" || lastname=="" || address=="" || zipcode=="" || city=="" || phone=="" || email=="")
	{	  
		alert("Gelieve alle velden correct in te vullen!");
		return false
	}
	else 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
		}
		else
		{
			document.contactfrm.submit();
		}
	}	
	return send;
}

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_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];}
}


function changeProdPic(pictureno)
		{
		 document.getElementById('bigpicture').innerHTML = "<img src='images/producten/pic"+pictureno+".jpg' width='267' height='216' border='0'>";	
		 picnumber=pictureno;
		}

function changeVideo(videono)
		{
		if (!is.ns)
		{
		document.MediaPlayer1.URL="videos/"+videono+".wmv";
		document.MediaPlayer1.controls.play();
		}			
		}

function changeMarketPic(pictureno)
		{
		 document.getElementById('bigpicture').innerHTML = "<img src='images/markten/pic"+pictureno+".jpg' width='157' height='128' border='0'>";	
		 picnumber=pictureno;
		}
		
		
function nextPic()
		{
		 if (picnumber<24) picnumber++;
		 document.getElementById('bigpicture').innerHTML = "<img src='images/producten/pic"+picnumber+".jpg' width='267' height='216' border='0'>";	
		}

function prevPic()
		{
		if (picnumber>1) picnumber--;
		document.getElementById('bigpicture').innerHTML = "<img src='images/producten/pic"+picnumber+".jpg' width='267' height='216' border='0'>";		
		}
		
function nextVideo()
		{
		 if (videonumber<8) videonumber++;
		 document.MediaPlayer1.URL="videos/"+videonumber+".wmv";
		 document.MediaPlayer1.controls.play();
		}

function prevVideo()
		{
		if (videonumber>1) videonumber--;
		document.MediaPlayer1.URL="videos/"+videonumber+".wmv";
		document.MediaPlayer1.controls.play();
		}