function bringfront_jb(part)
{
	if(document.getElementById("bb1") == part)
	{
		document.getElementById("bb1").style.display= "block";
		document.getElementById("bb2").style.display= "none";
		document.getElementById("bb3").style.display= "none";
		document.getElementById("bb4").style.display= "none";
		document.getElementById("bb5").style.display= "none";
		document.getElementById("bb1i").className="a3";
		document.getElementById("bb2i").className="a3-";
		document.getElementById("bb3i").className="a3-";
		document.getElementById("bb4i").className="a3-";
		document.getElementById("bb5i").className="a3-";
	}
	else if(document.getElementById("bb2") == part)
	{
		document.getElementById("bb1").style.display= "none";
		document.getElementById("bb2").style.display= "block";
		document.getElementById("bb3").style.display= "none";
		document.getElementById("bb4").style.display= "none";
		document.getElementById("bb5").style.display= "none";
		document.getElementById("bb1i").className="a3-";
		document.getElementById("bb2i").className="a3";
		document.getElementById("bb3i").className="a3-";
		document.getElementById("bb4i").className="a3-";
		document.getElementById("bb5i").className="a3-";
			}
	else if(document.getElementById("bb3") == part)
	{
		document.getElementById("bb1").style.display= "none";
		document.getElementById("bb2").style.display= "none";
		document.getElementById("bb3").style.display= "block";
		document.getElementById("bb4").style.display= "none";
		document.getElementById("bb5").style.display= "none";
		document.getElementById("bb1i").className="a3-";
		document.getElementById("bb2i").className="a3-";
		document.getElementById("bb3i").className="a3";
		document.getElementById("bb4i").className="a3-";
		document.getElementById("bb5i").className="a3-";
			}
	else if(document.getElementById("bb4") == part)
	{
		document.getElementById("bb1").style.display= "none";
		document.getElementById("bb2").style.display= "none";
		document.getElementById("bb3").style.display= "none";
		document.getElementById("bb4").style.display= "block";
		document.getElementById("bb5").style.display= "none";
		document.getElementById("bb1i").className="a3-";
		document.getElementById("bb2i").className="a3-";
		document.getElementById("bb3i").className="a3-";
		document.getElementById("bb4i").className="a3";
		document.getElementById("bb5i").className="a3-";
			}
	else if(document.getElementById("bb5") == part)
	{
		document.getElementById("bb1").style.display= "none";
		document.getElementById("bb2").style.display= "none";
		document.getElementById("bb3").style.display= "none";
		document.getElementById("bb4").style.display= "none";
		document.getElementById("bb5").style.display= "block";
		document.getElementById("bb1i").className="a3-";
		document.getElementById("bb2i").className="a3-";
		document.getElementById("bb3i").className="a3-";
		document.getElementById("bb4i").className="a3-";
		document.getElementById("bb5i").className="a3";
			}
}