if (document.images) {
companyoff=new Image();
companyoff.src= "images/home_menus/companyoff.gif";
companyon=new Image();
companyon.src= "images/home_menus/companyon.gif";
servicesoff=new Image();
servicesoff.src= "images/home_menus/servicesoff.gif";
serviceson=new Image();
serviceson.src= "images/home_menus/serviceson.gif";
propertiesoff=new Image();
propertiesoff.src= "images/home_menus/propertiesoff.gif";
propertieson=new Image();
propertieson.src= "images/home_menus/propertieson.gif";
historyoff=new Image();
historyoff.src= "images/home_menus/historyoff.gif";
historyon=new Image();
historyon.src= "images/home_menus/historyon.gif";
homesearchoff=new Image();
homesearchoff.src= "images/home_menus/homesearchoff.gif";
homesearchon=new Image();
homesearchon.src= "images/home_menus/homesearchon.gif";
developeroff=new Image();
developeroff.src= "images/home_menus/developeroff.gif";
developeron=new Image();
developeron.src= "images/home_menus/developeron.gif";
pastprojectsoff=new Image();
pastprojectsoff.src= "images/home_menus/pastprojectsoff.gif";
pastprojectson=new Image();
pastprojectson.src= "images/home_menus/pastprojectson.gif";
contactoff=new Image();
contactoff.src= "images/home_menus/contactoff.gif";
contacton=new Image();
contacton.src= "images/home_menus/contacton.gif";
agentsoff=new Image();
agentsoff.src= "images/home_menus/agentsoff.gif";
agentson=new Image();
agentson.src= "images/home_menus/agentson.gif";
}


function imageOn (imagename){
  document[imagename].src=eval(imagename+"on.src");
 }
function imageOff (imagename){
  document[imagename].src=eval(imagename+"off.src");
 }