function right_show1(){
	el1 = document.getElementById("right_content1");
	el2 = document.getElementById("right_content2");
	el3 = document.getElementById("right_content3");
	el4 = document.getElementById("right_content4");
	el1.style.display="block";
	el2.style.display="none";
	el3.style.display="none";
	el4.style.display="none";
}
function right_show2(){
	el1 = document.getElementById("right_content1");
	el2 = document.getElementById("right_content2");
	el3 = document.getElementById("right_content3");
	el4 = document.getElementById("right_content4");
	el1.style.display="none";
	el2.style.display="block";
	el3.style.display="none";
	el4.style.display="none";
}
function right_show3(){
	el1 = document.getElementById("right_content1");
	el2 = document.getElementById("right_content2");
	el3 = document.getElementById("right_content3");
	el4 = document.getElementById("right_content4");
	el1.style.display="none";
	el2.style.display="none";
	el3.style.display="block";
	el4.style.display="none";
}
function right_show4(){
	el1 = document.getElementById("right_content1");
	el2 = document.getElementById("right_content2");
	el3 = document.getElementById("right_content3");
	el4 = document.getElementById("right_content4");
	el1.style.display="none";
	el2.style.display="none";
	el3.style.display="none";
	el4.style.display="block";
}