function switch_desc(e0, e1, e2, e3, e4, z0, z1, z2, z3, z4)
{
if(document.getElementById("z0")) document.getElementById("z0").className=z0;
if(document.getElementById("z1")) document.getElementById("z1").className=z1;
if(document.getElementById("z2")) document.getElementById("z2").className=z2;
if(document.getElementById("z3")) document.getElementById("z3").className=z3;
if(document.getElementById("z4")) document.getElementById("z4").className=z4;
if(document.getElementById("e0")) document.getElementById("e0").className=e0;
if(document.getElementById("e1")) document.getElementById("e1").className=e1;
if(document.getElementById("e2")) document.getElementById("e2").className=e2;
if(document.getElementById("e3")) document.getElementById("e3").className=e3;
if(document.getElementById("e4")) document.getElementById("e4").className=e4;
}