browserName=navigator.appName; 
browserVer=parseInt(navigator.appVersion);
  if ((browserName=="Netscape" && browserVer>=3) || (browserName=="Microsoft Internet Explorer" && browserVer>=4))    
  version="n3";
  else
    version="n2";
  if (version=="n3")
   {
pic1on= new Image(208,22);
pic1on.src="images/butroofinganswers1.jpg";
pic2on= new Image(208,23);
pic2on.src="images/butcompanyhistory1.jpg";
pic3on= new Image(142,22);
pic3on.src="images/butcontacthuffman1.jpg";       
pic4on= new Image(142,22);   
pic4on.src="images/butrequestaquote1.jpg";

pic1off= new Image(208,22);      
pic1off.src="images/butroofinganswers.jpg";
pic2off= new Image(208,23);      
pic2off.src="images/butcompanyhistory.jpg";
pic3off= new Image(142,22);      
pic3off.src="images/butcontacthuffman.jpg";      
pic4off= new Image(142,22);
pic4off.src="images/butrequestaquote.jpg";
   }
function lightup(imgName)
 {
   if (version=="n3")
   {
      imgOn=eval(imgName + "on.src");
      document[imgName].src= imgOn;
    }
 }
function turnoff(imgName)
 {
   if (version=="n3")
    {
      imgOff=eval(imgName + "off.src");
      document[imgName].src= imgOff;
    }
 }


//Disable right mouse click Script
//By Maximus (maximus@nsimail.com) w/ mods by DynamicDrive
//For full source code, visit http://www.dynamicdrive.com

var message="All images and code are copyright protected.";

///////////////////////////////////
function clickIE4(){
if (event.button==2){
alert(message);
return false;
}
}

function clickNS4(e){
if (document.layers||document.getElementById&&!document.all){
if (e.which==2||e.which==3){
alert(message);
return false;
}
}
}

if (document.layers){
document.captureEvents(Event.MOUSEDOWN);
document.onmousedown=clickNS4;
}
else if (document.all&&!document.getElementById){
document.onmousedown=clickIE4;
}