function nav_1_in(){
	document.getElementById('nav_bg_1').style.backgroundColor='#DDDDDD';
}
function nav_1_out(){
	document.getElementById('nav_bg_1').style.backgroundColor='#FFFFFF';
}
function nav_2_in(){
	document.getElementById('nav_bg_2').style.backgroundColor='#DDDDDD';
}
function nav_2_out(){
	document.getElementById('nav_bg_2').style.backgroundColor='#FFFFFF';
}
function nav_3_in(){
	document.getElementById('nav_bg_3').style.backgroundColor='#DDDDDD';
}
function nav_3_out(){
	document.getElementById('nav_bg_3').style.backgroundColor='#FFFFFF';
}
function nav_4_in(){
	document.getElementById('nav_bg_4').style.backgroundColor='#DDDDDD';
}
function nav_4_out(){
	document.getElementById('nav_bg_4').style.backgroundColor='#FFFFFF';
}
function nav_5_in(){
	document.getElementById('nav_bg_5').style.backgroundColor='#DDDDDD';
}
function nav_5_out(){
	document.getElementById('nav_bg_5').style.backgroundColor='#FFFFFF';
}
function nav_6_in(){
	document.getElementById('nav_bg_6').style.backgroundColor='#DDDDDD';
}
function nav_6_out(){
	document.getElementById('nav_bg_6').style.backgroundColor='#FFFFFF';
}
function nav_7_in(){
	document.getElementById('nav_bg_7').style.backgroundColor='#DDDDDD';
}
function nav_7_out(){
	document.getElementById('nav_bg_7').style.backgroundColor='#FFFFFF';
}
function nav_8_in(){
	document.getElementById('nav_bg_8').style.backgroundColor='#DDDDDD';
}
function nav_8_out(){
	document.getElementById('nav_bg_8').style.backgroundColor='#FFFFFF';
}
function nav_9_in(){
	document.getElementById('nav_bg_9').style.backgroundColor='#DDDDDD';
}
function nav_9_out(){
	document.getElementById('nav_bg_9').style.backgroundColor='#FFFFFF';
}