var htmlScreenW = " JSEnabled JSScreen";
if (screen.availWidth <= 400) {
  htmlScreenW = " JSEnabled JSHandHeld";
  add_sheet("//css.emu.dk/css/tsc12_jshand.css", "screen")
}
var htmlElement = document.getElementsByTagName("html");
htmlElement[0].className += htmlScreenW;

function add_sheet(url, media) {
  if(document.createStyleSheet) {
    document.createStyleSheet(url);
  }
  else {
    var newSS   = document.createElement('link');
    newSS.rel   = 'stylesheet';
    newSS.type  = 'text/css';
    newSS.media = media || "all";
    newSS.href  = url;
    document.getElementsByTagName("head")[0].appendChild(newSS);
  }
}

function LavInUrl(formular) {
	if( formular.in_url != null )  {
	  if( formular.in_url.value != "" ) {
		 formular.q.value += " inurl:"+ formular.in_url.value;
     return true;
	  }
	}
	return false;
}

function Nyhedsbrev_tilmeld (formular) {
	if(!validateEmail(formular.email.value)) {
		return false;
	}
	addButton(formular, 'handling', 'Tilmeld');
	formular.submit();
	return true;
};

function Nyhedsbrev_frameld (formular) {
	if(!validateEmail(formular.email.value)) {
		return false;
	}
	addButton(formular, 'handling', 'Afmeld');
	formular.submit();
	return true;
};

function addButton (form, name,value) {
	var b = document.createElement('input');
	b.setAttribute('type', 'hidden');
	b.setAttribute('name', name);
	b.setAttribute('value',value);
	form.appendChild(b);
};

function validateEmail(strIn) {
	if(strIn == '') {
		return false;
	} else {
		return true;
	}
};
	
function FormClearField(field, thisDefault)
{
	if (field.value == thisDefault) field.value = '';
}

function openWindow(link) {
	window.open(link, "help", "height=480,width=640,resizable=1");
	return false;
}

function openWindowArg(link, height, width) {
	window.open(link, "help", "height="+height+",width="+width+",resizable=1");
	return false;
}