var score_layers = new Array( "layer1", "layer2" , "layer3", "layer4" )
var score_objs = new Array( score_layers.length );
function score_getObjs()
{
var nObjMax = score_layers.length;
for( nCount = 0; nCount < nObjMax; nCount++ )
{
score_objs[nCount] = document.getElementById( score_layers[nCount] );
}
}
function setMultitap( layerID )
{
score_objs[0] != null ? "" : score_getObjs();
if( layerID == score_objs[0].id )
{
score_objs[0].style.display = "";
score_objs[1].style.display = "none";
score_objs[2].style.display = "none";
score_objs[3].style.display = "none";

}
else if( layerID == score_objs[1].id )
{
score_objs[0].style.display = "none";
score_objs[1].style.display = "";
score_objs[2].style.display = "none";
score_objs[3].style.display = "none";

}
else if( layerID == score_objs[2].id )
{
score_objs[0].style.display = "none";
score_objs[1].style.display = "none";
score_objs[2].style.display = "";
score_objs[3].style.display = "none";

}
else if( layerID == score_objs[3].id )
{
score_objs[0].style.display = "none";
score_objs[1].style.display = "none";
score_objs[2].style.display = "none";
score_objs[3].style.display = "";

}
}

var state = 'none'; 

function showhide(layer_ref) { 

if (state == 'block') { 
state = 'none'; 
} 
else { 
state = 'block'; 
} 
if (document.all) { //IS IE 4 or 5 (or 6 beta) 
eval( "document.all." + layer_ref + ".style.display = state"); 
} 
if (document.layers) { //IS NETSCAPE 4 or below 
document.layers[layer_ref].display = state; 
} 
if (document.getElementById &&!document.all) { 
hza = document.getElementById(layer_ref); 
hza.style.display = state; 
} 
} 

window.onerror = null;
var bName = navigator.appName;
var bVer = parseInt(navigator.appVersion);
var NS4 = (bName == "Netscape" && bVer >= 4);
var IE4 = (bName == "Microsoft Internet Explorer" 
&& bVer >= 4);
var NS3 = (bName == "Netscape" && bVer < 4);
var IE3 = (bName == "Microsoft Internet Explorer" 
&& bVer < 4);
var blink_speed=700;
var i=0;

if (NS4 || IE4) {
if (navigator.appName == "Netscape") {
layerStyleRef="layer.";
layerRef="document.getElementById";
styleSwitch="";
}else{
layerStyleRef="layer.style.";
layerRef="document.all";
styleSwitch=".style";
}
}

function Blink(layerName){
if (NS4 || IE4) { 
if(i%2==0)
{
eval(layerRef+'["'+layerName+'"]'+
styleSwitch+'.visibility="visible"');
}
else
{
eval(layerRef+'["'+layerName+'"]'+
styleSwitch+'.visibility="hidden"');
}
} 
if(i<1)
{
i++;
} 
else
{
i--
}
setTimeout("Blink('"+layerName+"')",blink_speed);
}