function getElem(name)
{
    nr=document.getElementById(name);
    return(nr);
}

var menus = new Array();

function showMenu(id) {
        menus[id] = false;
        document.getElementById(id).style.display = 'block';
}

function hide (id) {
        if (menus[id])
        {
                document.getElementById(id).style.display = 'none';
        }
}
function hideMenu(id) {
        menus[id] = true;
        window.setTimeout ('hide("'+id+'")', 200)
}  

function activate (link) {
	document.getElementById(link).className='active';
}
function disactivate (link) {
	document.getElementById(link).className='';
}

function clearForm(id){
	
	document.getElementById( 'f_name' ).className = '';
	document.getElementById( 'f_email' ).className = '';
	document.getElementById( 'f_c_name' ).className = '';
	document.getElementById( 'f_address' ).className = '';
	document.getElementById( 'f_c_number' ).className = '';
	document.getElementById( 'f_comment' ).className = '';
	document.getElementById( 'f_error' ).style.display = 'none';
	
	for( i = 1; i < 9 ;i++ ) {
		element = document.getElementById(id+"_"+i);
		if( element != 'null' ) {
			element.value = "";
		}else {
			break;
		}
	}
}