function showcont(val)
	{
		document.getElementById("ctab1").className = "contunshow";
		document.getElementById("ctab2").className = "contunshow";
		document.getElementById("ctab3").className = "contunshow";
		document.getElementById("ctab4").className = "contunshow";
		document.getElementById("c" +val).className = "contshow";
		document.getElementById("tab1").style.background="background-image: url('Portals/0/Skins/ystk/images/right_tab2.jpg') no-repeat";
		document.getElementById("tab2").style.background="background-image: url('Portals/0/Skins/ystk/images/right_tab2.jpg') no-repeat";
		document.getElementById("tab3").style.background="background-image: url('Portals/0/Skins/ystk/images/right_tab2.jpg') no-repeat";
		document.getElementById("tab4").style.background="background-image: url('Portals/0/Skins/ystk/images/right_tab2.jpg') no-repeat";
		document.getElementById(val).style.background="background-image: url('Portals/0/Skins/ystk/images/right_tab1.jpg') no-repeat";
	}