function imgObject(imgName)
{
	this.norm = new Image();
	this.active = new Image();
	eval("this.norm.src = 'images/btn_"+imgName+".gif';");
	eval("this.active.src = 'images/btn_"+imgName+"_ovr.gif';");
}

var home = new imgObject("home");
var techsupport = new imgObject("techsupport");
var contactinfo = new imgObject("contactinfo");
var aboutus = new imgObject("aboutus");
var webdesign = new imgObject("webdesign");
var systemsimp = new imgObject("systemsimp");

function imgSwitch(name)
{
	switch(name)
	{
		case "home":
			document.home.src = home.active.src;
			break;
		case "techsupport":
			document.techsupport.src = techsupport.active.src;
			break;
		case "contactinfo":
			document.contactinfo.src = contactinfo.active.src;
			break;
		case "aboutus":
			document.aboutus.src = aboutus.active.src;
			break;
		case "webdesign":
			document.webdesign.src = webdesign.active.src;
			break;
		case "systemsimp":
			document.systemsimp.src = systemsimp.active.src;
			break;
	} // end switch
}

function imgReturn(name)
{
	switch(name)
	{
		case "home":
			document.home.src = home.norm.src;
			break;
		case "techsupport":
			document.techsupport.src = techsupport.norm.src;
			break;
		case "contactinfo":
			document.contactinfo.src = contactinfo.norm.src;
			break;
		case "aboutus":
			document.aboutus.src = aboutus.norm.src;
			break;
		case "webdesign":
			document.webdesign.src = webdesign.norm.src;
			break;
		case "systemsimp":
			document.systemsimp.src = systemsimp.norm.src;
			break;
	} // end switch
}

function openWin(filename) {
	var windowX = screen.availWidth / 2 - 784 / 2;
	var windowY = screen.availHeight / 2 - 584 / 2;
	window.open(filename, "tnt", "toolbar=no,width=785,height=585,status=no,scrollbars=no,resizeable=no,menubar=no,left="+windowX+",screenX="+windowX+",top="+windowY+",screenY="+windowY);
}