function homemouseOver()
{  document.getElementById("home").src ="images/menu-home-hover.png";  }
function homemouseOut()
{  document.getElementById("home").src ="images/menu-home.png";  }
function aboutmouseOver()
{  document.getElementById("about").src ="images/menu-about-hover.png";  }
function aboutmouseOut()
{  document.getElementById("about").src ="images/menu-about.png";  }
function servicesmouseOver()
{  document.getElementById("services").src ="images/menu-services-hover.png";  }
function servicesmouseOut()
{  document.getElementById("services").src ="images/menu-services.png";  }
function dcentermouseOver()
{  document.getElementById("dcenter").src ="images/menu-dcenter-hover.png";  }
function dcentermouseOut()
{  document.getElementById("dcenter").src ="images/menu-dcenter.png";  }
function contactmouseOver()
{  document.getElementById("contact").src ="images/menu-contact-hover.png";  }
function contactmouseOut()
{  document.getElementById("contact").src ="images/menu-contact.png";  }