function changeping(){
	document.getElementById("tu").src="images/b3.jpg";
	}
function changezhu(){
	document.getElementById("tu").src="images/b2.jpg";	
	}
function changequ(){
	document.getElementById("tu").src="images/bz1.JPG";	
	}
function changeBtnImgOver(op){
	op.style.backgroundImage='url(images/2.gif)';
	op.style.color='#000000';
	}
function changeBtnImgOut(op){
	op.style.backgroundImage='url(images/1.gif)';
	op.style.color='#FFFFFF';
	}
function changequshi1(){
	document.getElementById("tdname").innerHTML='宽带变化趋势图';
	document.getElementById("tu").src='images/qu5.jpg';
	}
function changequshi2(){
	document.getElementById("tdname").innerHTML='停车位变化趋势图';
	document.getElementById("tu").src='images/qu6.jpg';
	}
function changequshi3(){
	document.getElementById("tdname").innerHTML='物业费变化趋势图';
	document.getElementById("tu").src='images/qu7.jpg';
	}
function changequshi4(){
	document.getElementById("tdname").innerHTML='服务变化趋势图';
	document.getElementById("tu").src='images/qu5.jpg';
	}
function changequshi5(){
	document.getElementById("tdname").innerHTML='区域变化趋势图';
	document.getElementById("tu").src='images/qu6.jpg';
	}