function navFlip(id){
	if(document.getElementById(id).style.display == 'none')
		{
		document.getElementById(id).style.display = 'block';
		document.getElementById('arrow_' + id).src = '/img/arrow_down.gif';
	}
	else{
		document.getElementById(id).style.display = 'none';
		document.getElementById('arrow_' + id).src = '/img/arrow_right.gif';
	}
	return true;
}


window.onload=function(){
	height = 0;
	if( typeof( window.innerHeight ) == 'number' ) {
		height = window.innerHeight;
	} 
	else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		height = document.documentElement.clientHeight;
	} 
	else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		height = document.body.clientHeight;
	}
	document.getElementById("wrapper").style.height = String(height+1)+'px';
}