function doChangeProductImage(strPopupImage, strProductImage){
	var productImagePopup = document.getElementById('productImagePopup');
	var productImage = document.getElementById('productImage');
	var productLoop = document.getElementById('productImageLoop');
	var afbeelding = new Image()
	afbeelding.onload = function(){
		productImage.src = this.src;
		productLoop.href = strPopupImage;
		productImagePopup.href = strPopupImage;
	}
	afbeelding.src = strProductImage;

	if(productImagePopup != null && productImage != null){
		productImage.src = afbeelding.src;
		productLoop.href = strPopupImage;
		productImagePopup.href = strPopupImage;
	}
}
function doPopup(strPopupfile, intPopW, intPopH, strScrollbars) {
	/*var intW = 800, intH = 600;*/
	var intW = 1024, intH = 768;
	if (document.all || document.layers) {
		intW = screen.availWidth;
		intH = screen.availHeight;
	}

	var intLeftPos = (intW-intPopW) / 2;
	var intTopPos = (intH-intPopH) / 2;

	window.open(strPopupfile,"popup"+intPopW,"width="+intPopW+",height="+intPopH+",top="+intTopPos+",left="+intLeftPos+",scrollbars=" + strScrollbars);
}
function doSubmitContact() {
	var blnError = false;
	
	if (document.frmContact.FirstName.value == "" && !blnError) {
		alert("selecteer-voornaam");
		document.frmContact.FirstName.focus();
		blnError = true;
	}
	
	if (document.frmContact.LastName.value == "" && !blnError) {
		alert("selecteer-achternaam");
		document.frmContact.LastName.focus();
		blnError = true;
	}
	
  if (document.frmContact.Email.value == "" && !blnError) {
		alert("selecteer-email");
		document.frmContact.Email.focus();
		blnError = true;
	} else {
  	var arrMatch = new RegExp("^[A-Za-z0-9_-]+([.][A-Za-z0-9_-]+){0,10}[@][A-Za-z0-9_-]+([.][A-Za-z0-9_-]+){1,6}$").exec(document.frmContact.Email.value);
		   if (!arrMatch && !blnError)
		   {
         alert("ongeldig-email");
			   document.frmContact.Email.focus();
			   blnError = true;
		   }
  }
	
	if (!blnError) {
		document.frmContact.submit();
	}
}