function showurl(info){
  	info = info + 1;
  	for (i=1;i<=13;i++){
		if (i!=info){
  		document.getElementById('example_'+i).style.display = 'none';
		
		}
		else {
			document.getElementById('example_'+i).style.display = 'inline';
				if(document.getElementById('example_2').style.display == 'inline'){
			//	if(document.form.url.value == 'youtube'){
					document.getElementById('rad').innerHTML='<input type="radio" name="optvideotype" value="l" id="optvideotype" checked="checked" >Low quality flv file<input type="radio" name="optvideotype" value="m" id="optvideotype" >Heigh quality mp4 file&nbsp;&nbsp;&nbsp;';
				}else{
					document.getElementById('rad').innerHTML='';
				}
			}
  	}
	document.getElementById('err').style.display = 'none';
}