function changeAllClass(){
		document.getElementById("tabBkg1").className = "tabBkg";
		document.getElementById("tabBkg2").className = "tabBkg";
		document.getElementById("tabBkg3").className = "tabBkg";
		document.getElementById("tabBkg4").className = "tabBkg";
		document.getElementById("tabBkg5").className = "tabBkg";
}
	
function changeTabBkg1(){
		document.getElementById("tabBkg1").className = "tabBkgDown";
}
	
function changeTabBkg2(){
		document.getElementById("tabBkg2").className = "tabBkgDown";
}
	
function changeTabBkg3(){
		document.getElementById("tabBkg3").className = "tabBkgDown";
}

function changeTabBkg4(){
		document.getElementById("tabBkg4").className = "tabBkgDown";
}
	
function changeTabBkg5(){
		document.getElementById("tabBkg5").className = "tabBkgDown";
}