function switch1(div)
{
if (document.getElementById('company_info'))
{
var option=['company_info','mission','vision'];
for(var i=0; i<option.length; i++)
{ obj=document.getElementById(option[i]);
obj.style.display=(option[i]==div)? "block" : "none"; }
}
}

window.onload=function(){switch1('company_info');}



function switch_services(div)
{
if (document.getElementById('services'))
{
var option=['services', 'line_painting', 'traffic_control', 'pavement_marking_removal','marking_tapes'];
for(var i=0; i<option.length; i++)
{ obj=document.getElementById(option[i]);
obj.style.display=(option[i]==div)? "block" : "none"; }
}
}



window.onload=function(){switch_services('services');}