function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function showLayer(grpName, mark)
{
	if (grpName=="IndexLayer")
		for (var i=0; i<5; i++){
			if (grpName+"x"+i == mark){
				if (document.layers){
					document[grpName+i].visibility="show";
				}
				else{
					document.getElementById(grpName+i).style.visibility="visible";
				}
			}
			else{
				if (document.layers){
					document[grpName+i].visibility="hide";
				}
				else{
					document.getElementById(grpName+i).style.visibility="hidden";
				}
			}
		}
}

function showLayerMR(grpName, mark)
{
	if (grpName=="IndexLayer")
		for (var i=0; i<5; i++){
			if (grpName+"x"+i == mark){
				if (document.layers){
					document[grpName+i].visibility="show";
				}
				else{
					document.getElementById(grpName+i).style.visibility="visible";
				}
			}
			else{
				if (document.layers){
					document[grpName+i].visibility="hide";
				}
				else{
					document.getElementById(grpName+i).style.visibility="hidden";
				}
			}
		}
}