j=document.images;
if (j)
{
button0=new Image(); button0.src="images/home.GIF";
button01=new Image(); button01.src="images/home_bk.GIF";
button1=new Image(); button1.src="images/rubberroofs.GIF";
button11=new Image(); button11.src="images/rubberroofs_bk.GIF";
button2=new Image(); button2.src="images/standingseams.GIF";
button21=new Image(); button21.src="images/standingseams_bk.GIF";
button3=new Image(); button3.src="images/sheetmetal.GIF";
button31=new Image(); button31.src="images/sheetmetal_bk.GIF";
button4=new Image(); button4.src="images/builtup.GIF";
button41=new Image(); button41.src="images/builtup_bk.GIF";
button5=new Image(); button5.src="images/maintenance.GIF";
button51=new Image(); button51.src="images/maintenance_bk.GIF";
button6=new Image(); button6.src="images/estimates.GIF";
button61=new Image(); button61.src="images/estimates_bk.GIF";
button7=new Image(); button7.src="images/contactus.GIF";
button71=new Image(); button71.src="images/contactus_bk.GIF";

}
function imgi(p)
{if (j) {on = eval (p + "1.src"); 
document[p].src = on; }
} 
function imgo(p) 
{if (j) {off = eval (p + ".src"); 
document[p].src = off;
}
}