function show(arg) {
	var reg= new RegExp(arg);
	allDivs=document.all.tags("DIV");
	for (i=0; i<allDivs.length; i++)
	{
		if ( reg.test(allDivs(i).id) ) 
		{	
			allDivs(i).style.display="";
		}
	}
}

function unshow(arg) {
	var reg= new RegExp(arg);
	allDivs=document.all.tags("DIV");
	for (i=0; i<allDivs.length; i++)
	{
		if ( reg.test(allDivs(i).id) ) 
		{	
			allDivs(i).style.display="none";
		}
	}
}

//preload the menu tabs
var image = new Array(14);

image[0] = 	"pics/menu/homeI.jpg";	
image[1] = 	"pics/menu/aboutusI.jpg";
image[2] =	"pics/menu/productsI.gif";
image[3] =  "pics/menu/suppliesI.gif";
image[4] =  "pics/menu/servicesI.gif"; 
image[5] =  "pics/menu/gsaI.gif";
image[6] =  "pics/menu/contactUsI.gif";
image[7] = 	"pics/menu/homeA.jpg";	
image[8] = 	"pics/menu/aboutusA.jpg";
image[9] =	"pics/menu/productsA.gif";
image[10] =  "pics/menu/suppliesA.gif";
image[11] =  "pics/menu/servicesA.gif";  
image[12] =  "pics/menu/gsaA.gif";
image[13] =  "pics/menu/contactUsA.gif";


for (i=0; i < image.length; i++) {
var preload = new Image();
preload.src = image[i];
}