function blendoff(idname) {
	document.getElementById(idname).style.display = 'none';
}
function blendon(idname) {
	document.getElementById(idname).style.display = 'block';
}
function switchtabs(werta) {
	if (werta=='1'){
		document.getElementById('tablink1').className='selected';
		document.getElementById('tablink2').className='';
	    document.getElementById('tablink3').className='';
	}else if (werta=='2'){
		document.getElementById('tablink1').className='';
		document.getElementById('tablink2').className='selected';
	    document.getElementById('tablink3').className='';
	}else if (werta=='3'){
		document.getElementById('tablink1').className='';
		document.getElementById('tablink2').className='';
	    document.getElementById('tablink3').className='selected';
	}
}