function openSecOne(){
	document.getElementById("cat_cont1").className = "cat_cont_v";
	document.getElementById("cat_cont2").className = "cat_cont_inv";
	document.getElementById("cat_cont3").className = "cat_cont_inv";
	document.getElementById("cat_swt1").style.backgroundImage = "url(../images/cat_swtchr01.png)";
	document.getElementById("cat_swt2").style.backgroundImage = "url(../images/cat_swtchr2.png)";
	document.getElementById("cat_swt3").style.backgroundImage = "url(../images/cat_swtchr.png)";
}
function openSecTwo(){
	document.getElementById("cat_cont2").className = "cat_cont_v";
	document.getElementById("cat_cont1").className = "cat_cont_inv";
	document.getElementById("cat_cont3").className = "cat_cont_inv";
	document.getElementById("cat_swt1").style.backgroundImage = "url(../images/cat_swtchr.png)";
	document.getElementById("cat_swt2").style.backgroundImage = "url(../images/cat_swtchr02.png)";
	document.getElementById("cat_swt3").style.backgroundImage = "url(../images/cat_swtchr.png)";
}
function openSecThree(){
	document.getElementById("cat_cont3").className = "cat_cont_v";
	document.getElementById("cat_cont1").className = "cat_cont_inv";
	document.getElementById("cat_cont2").className = "cat_cont_inv";
	document.getElementById("cat_swt1").style.backgroundImage = "url(../images/cat_swtchr.png)";
	document.getElementById("cat_swt2").style.backgroundImage = "url(../images/cat_swtchr2.png)";
	document.getElementById("cat_swt3").style.backgroundImage = "url(../images/cat_swtchr01.png)";
}