// show dropdowns //

function show(id,but) {   // show dropdowns //
    if( document.getElementById(id) != null )
    	document.getElementById(id).style.visibility = "visible";
    if( document.getElementById(but) != null)
    	document.getElementById(but).className = "select";
}
function hide(id,but) {  // hide dropdowns //
    if( document.getElementById(id) != null )
    	document.getElementById(id).style.visibility = "hidden";
    if( document.getElementById(but) != null)
	    document.getElementById(but).className = "";
}


function linkselect(id) { // select page link //
        if( document.getElementById(id) != null )
		    document.getElementById(id).className = "select";
		}