function swichtabs(wert) {
	if (wert=='1'){
		document.getElementById('tablink1').className='selected';
		document.getElementById('tablink2').className='';
	    document.getElementById('tablink3').className='';
		document.getElementById('tablink4').className='';
		document.getElementById('tablink5').className='';
		document.getElementById('tablink6').className='';
		document.getElementById('tablink7').className='';		
		document.getElementById('tablink8').className='';
		document.getElementById('tablink9').className='';
		document.getElementById('optional_extras').style.display='block';
 		document.getElementById('m_gt_pack').style.display='none';
		document.getElementById('m_exterior_features').style.display='none';
		document.getElementById('m_interior_features').style.display='none';
		document.getElementById('m_soft_furnishings').style.display='none';
		document.getElementById('m_kitchen_features').style.display='none';
		document.getElementById('m_washroom_features').style.display='none';
		document.getElementById('m_heating_systems').style.display='none';	
		document.getElementById('m_electrical_features').style.display='none';	
	}else if (wert=='2'){
		document.getElementById('tablink1').className='';
		document.getElementById('tablink2').className='selected';
	    document.getElementById('tablink3').className='';
		document.getElementById('tablink4').className='';
		document.getElementById('tablink5').className='';
		document.getElementById('tablink6').className='';
		document.getElementById('tablink7').className='';		
		document.getElementById('tablink8').className='';
		document.getElementById('tablink9').className='';
		document.getElementById('optional_extras').style.display='none';
 		document.getElementById('m_gt_pack').style.display='block';
		document.getElementById('m_exterior_features').style.display='none';
		document.getElementById('m_interior_features').style.display='none';
		document.getElementById('m_soft_furnishings').style.display='none';
		document.getElementById('m_kitchen_features').style.display='none';
		document.getElementById('m_washroom_features').style.display='none';
		document.getElementById('m_heating_systems').style.display='none';	
		document.getElementById('m_electrical_features').style.display='none';		
	}else if (wert=='3'){
		document.getElementById('tablink1').className='';
		document.getElementById('tablink2').className='';
	    document.getElementById('tablink3').className='selected';
		document.getElementById('tablink4').className='';
		document.getElementById('tablink5').className='';
		document.getElementById('tablink6').className='';
		document.getElementById('tablink7').className='';		
		document.getElementById('tablink8').className='';
		document.getElementById('tablink9').className='';
		document.getElementById('optional_extras').style.display='none';
 		document.getElementById('m_gt_pack').style.display='none';
		document.getElementById('m_exterior_features').style.display='block';
		document.getElementById('m_interior_features').style.display='none';
		document.getElementById('m_soft_furnishings').style.display='none';
		document.getElementById('m_kitchen_features').style.display='none';
		document.getElementById('m_washroom_features').style.display='none';
		document.getElementById('m_heating_systems').style.display='none';	
		document.getElementById('m_electrical_features').style.display='none';	
	}else if (wert=='4'){
		document.getElementById('tablink1').className='';
		document.getElementById('tablink2').className='';
	    document.getElementById('tablink3').className='';
		document.getElementById('tablink4').className='selected';
		document.getElementById('tablink5').className='';
		document.getElementById('tablink6').className='';
		document.getElementById('tablink7').className='';		
		document.getElementById('tablink8').className='';
		document.getElementById('tablink9').className='';
		document.getElementById('optional_extras').style.display='none';
 		document.getElementById('m_gt_pack').style.display='none';
		document.getElementById('m_exterior_features').style.display='none';
		document.getElementById('m_interior_features').style.display='block';
		document.getElementById('m_soft_furnishings').style.display='none';
		document.getElementById('m_kitchen_features').style.display='none';
		document.getElementById('m_washroom_features').style.display='none';
		document.getElementById('m_heating_systems').style.display='none';	
		document.getElementById('m_electrical_features').style.display='none';	
	}else if (wert=='5'){
		document.getElementById('tablink1').className='';
		document.getElementById('tablink2').className='';
	    document.getElementById('tablink3').className='';
		document.getElementById('tablink4').className='';
		document.getElementById('tablink5').className='selected';
		document.getElementById('tablink6').className='';
		document.getElementById('tablink7').className='';		
		document.getElementById('tablink8').className='';
		document.getElementById('tablink9').className='';
		document.getElementById('optional_extras').style.display='none';
 		document.getElementById('m_gt_pack').style.display='none';
		document.getElementById('m_exterior_features').style.display='none';
		document.getElementById('m_interior_features').style.display='none';
		document.getElementById('m_soft_furnishings').style.display='block';
		document.getElementById('m_kitchen_features').style.display='none';
		document.getElementById('m_washroom_features').style.display='none';
		document.getElementById('m_heating_systems').style.display='none';	
		document.getElementById('m_electrical_features').style.display='none';	
	}else if (wert=='6'){
		document.getElementById('tablink1').className='';
		document.getElementById('tablink2').className='';
	    document.getElementById('tablink3').className='';
		document.getElementById('tablink4').className='';
		document.getElementById('tablink5').className='';
		document.getElementById('tablink6').className='selected';
		document.getElementById('tablink7').className='';		
		document.getElementById('tablink8').className='';
		document.getElementById('tablink9').className='';
		document.getElementById('optional_extras').style.display='none';
 		document.getElementById('m_gt_pack').style.display='none';
		document.getElementById('m_exterior_features').style.display='none';
		document.getElementById('m_interior_features').style.display='none';
		document.getElementById('m_soft_furnishings').style.display='none';
		document.getElementById('m_kitchen_features').style.display='block';
		document.getElementById('m_washroom_features').style.display='none';
		document.getElementById('m_heating_systems').style.display='none';	
		document.getElementById('m_electrical_features').style.display='none';	
	}else if (wert=='7'){
		document.getElementById('tablink1').className='';
		document.getElementById('tablink2').className='';
	    document.getElementById('tablink3').className='';
		document.getElementById('tablink4').className='';
		document.getElementById('tablink5').className='';
		document.getElementById('tablink6').className='';
		document.getElementById('tablink7').className='selected';		
		document.getElementById('tablink8').className='';
		document.getElementById('tablink9').className='';
		document.getElementById('optional_extras').style.display='none';
 		document.getElementById('m_gt_pack').style.display='none';
		document.getElementById('m_exterior_features').style.display='none';
		document.getElementById('m_interior_features').style.display='none';
		document.getElementById('m_soft_furnishings').style.display='none';
		document.getElementById('m_kitchen_features').style.display='none';
		document.getElementById('m_washroom_features').style.display='block';
		document.getElementById('m_heating_systems').style.display='none';	
		document.getElementById('m_electrical_features').style.display='none';	
	}else if (wert=='8'){
		document.getElementById('tablink1').className='';
		document.getElementById('tablink2').className='';
	    document.getElementById('tablink3').className='';
		document.getElementById('tablink4').className='';
		document.getElementById('tablink5').className='';
		document.getElementById('tablink6').className='';
		document.getElementById('tablink7').className='';		
		document.getElementById('tablink8').className='selected';
		document.getElementById('tablink9').className='';
		document.getElementById('optional_extras').style.display='none';
 		document.getElementById('m_gt_pack').style.display='none';
		document.getElementById('m_exterior_features').style.display='none';
		document.getElementById('m_interior_features').style.display='none';
		document.getElementById('m_soft_furnishings').style.display='none';
		document.getElementById('m_kitchen_features').style.display='none';
		document.getElementById('m_washroom_features').style.display='none';
		document.getElementById('m_heating_systems').style.display='block';	
		document.getElementById('m_electrical_features').style.display='none';	
	}else if (wert=='9'){
		document.getElementById('tablink1').className='';
		document.getElementById('tablink2').className='';
	    document.getElementById('tablink3').className='';
		document.getElementById('tablink4').className='';
		document.getElementById('tablink5').className='';
		document.getElementById('tablink6').className='';
		document.getElementById('tablink7').className='';		
		document.getElementById('tablink8').className='';
		document.getElementById('tablink9').className='selected';
		document.getElementById('optional_extras').style.display='none';
 		document.getElementById('m_gt_pack').style.display='none';
		document.getElementById('m_exterior_features').style.display='none';
		document.getElementById('m_interior_features').style.display='none';
		document.getElementById('m_soft_furnishings').style.display='none';
		document.getElementById('m_kitchen_features').style.display='none';
		document.getElementById('m_washroom_features').style.display='none';
		document.getElementById('m_heating_systems').style.display='none';	
		document.getElementById('m_electrical_features').style.display='block';	
	}
}
window.onload=function(){
	swichtabs('3');
}