# Pastebin UNjum3A4
function changeCols() {
            if(parent.document.getElementById("main").cols == "0,60%,40*")
            {
                parent.document.getElementById("main").cols = "15%,*,30%"
            }
            else
            {
                parent.document.getElementById("main").cols = "0,60%,40*"
            }
        }