home = new Image();
          home.src = "images/home.gif"

          homea = new Image();
          homea.src = "images/homex.gif"
           
          projects = new Image();
          projects.src = "images/projects.gif"

          projectsa = new Image();
          projectsa.src = "images/projectsx.gif"
          
          about = new Image();
          about.src = "images/about.gif"
          
          abouta = new Image();
          abouta.src = "images/aboutx.gif"      
          
          contact = new Image();
          contact.src = "images/contact.gif"
          
          contacta = new Image();
          contacta.src = "images/contactx.gif"        
                     
function doover(imgname, imgover) {
imgname.src = imgover.src;
}         

function maketab(tabnumber) {
	switch (tabnumber) {
		case 1:
		  home.src = "images/homea.gif"
          homea.src = "images/homea.gif"
          home1.src = "images/homea.gif"		  
		break
		case 2:
          projects.src = "images/projectsa.gif"
          projectsa.src = "images/projectsa.gif"
          projects1.src = "images/projectsa.gif"		  
		break
		case 3:
          about.src = "images/abouta.gif"
          abouta.src = "images/abouta.gif"
          about1.src = "images/abouta.gif"		  
		break
		case 4:
          contact.src = "images/contacta.gif"
          contacta.src = "images/contacta.gif"
          contact1.src = "images/contacta.gif"		  
		break
			}
}