var modalWindow;
function veiviser()
{
  // showModalDialog for Non-IE browsers
  if (!window.showModalDialog) {
  }
  //Bruker denne for alle browsere da den ikke krever at man tømmer cache etter at menyen har endret seg.
  window.showModalDialog = function(sUrl, vArguments, sFeatures) {
      var wFeatures   = sFeatures.replace(/dialog/gi,"").replace(/:/gi,"=").replace(/;/gi,",");  // plus a little more replacement
      modalWindow = window.open (sUrl, "_blank", wFeatures);
 
      modalWindow.setFocusToWindow = function () {
          modalWindow.focus();
      }
      modalWindow.setInterval ("setFocusToWindow()", 100);
  }
 
  // Show modal dialog...
  window.showModalDialog ("veiviser.aspx", self, "dialogHeight: 500px; dialogWidth: 500px; dialogTop:0; dialogLeft:0; help: no; status: yes; resizable: yes; scrollbars:yes")

}