// preload the search tab images

if (document.images) {
  zoek1_on = new Image();
  zoek1_on.src  = '/stdimg/imgsearch/zoeken_On.gif';
  zoek1_off = new Image();
  zoek1_off.src = '/stdimg/imgsearch/zoeken_Off.gif';
  
  zoek2_on = new Image();
  zoek2_on.src  = '/stdimg/imgsearch/kelly_On.gif';
  zoek2_off = new Image();
  zoek2_off.src = '/stdimg/imgsearch/kelly_Off.gif';
  
  zoek3_on = new Image();
  zoek3_on.src  = '/stdimg/imgsearch/total_On.gif';
  zoek3_off = new Image();
  zoek3_off.src = '/stdimg/imgsearch/total_Off.gif';
}

// function of tab 1 "zibb zoeken"
function clickZoeken(id, newClass) {
	showTab('zoeken', 'zoek1');
	hideTab('kelly', 'zoek2');
	hideTab('total', 'zoek3');
	

	identity=document.getElementById(id);
	identity.className=newClass;

	identity1=document.getElementById('search1');
	identity1.className='searchvis';
	identity2=document.getElementById('search2');
	identity2.className='searchinvis';
	identity3=document.getElementById('search3');
	identity3.className='searchinvis';


	return true;
}

// function of tab 2 Kelly Search
function clickKelly(id, newClass) {
	hideTab('zoeken', 'zoek1');
	showTab('kelly', 'zoek2');
	hideTab('total', 'zoek3');

	identity=document.getElementById(id);
	identity.className=newClass;

	identity1=document.getElementById('search1');
	identity1.className='searchinvis';
	identity2=document.getElementById('search2');
	identity2.className='searchvis';
	identity3=document.getElementById('search3');
	identity3.className='searchinvis';


	return true;
}

// function of tab 3 Total Search
function clickTotal(id, newClass) {
	hideTab('zoeken', 'zoek1');
	hideTab('kelly', 'zoek2');
	showTab('total', 'zoek3');

	identity=document.getElementById(id);
	identity.className=newClass;

	identity1=document.getElementById('search1');
	identity1.className='searchinvis';
	identity2=document.getElementById('search2');
	identity2.className='searchinvis';
	identity3=document.getElementById('search3');
	identity3.className='searchvis';

	return true;
}

// make tab active
function showTab(Name, Image) {
	document.images[Name].src = eval(Image + '_on' + '.src');
}

// make tab inactive
function hideTab(Name, Image) {
	document.images[Name].src = eval(Image + '_off' + '.src');
}

// clears the first time of selecting the search box
function clearText(obj, val) {
	if (val == "zoekterm") {
		obj.value = '';
	}
}