function imgSwap(oImg)
{
   var strOver  = "_on"    // image to be used with mouse over
   var strOff = "_off"     // normal image
   var strImg = oImg.src
   if (strImg.indexOf(strOver) != -1)
      oImg.src = strImg.replace(strOver,strOff)
   else
      oImg.src = strImg.replace(strOff,strOver)
}

function showIt(id) {
var d = document.getElementById(id);
if (d) {d.style.display='block';}
}

function hideIt(id) {
  document.getElementById(id).style.display='none';
}


function preloadImages() {

	image1 = new Image();
	image1.src = "/tphfiles/images/btn_24hr_off.png";
	image2 = new Image();
	image2.src = "/tphfiles/images/btn_24hr_on.png";
	image3 = new Image();
	image3.src = "/tphfiles/images/btn_freeestimate_off.jpg";
	image4 = new Image();
	image4.src = "/tphfiles/images/btn_freeestimate_on.jpg";
	image5 = new Image();
	image5.src = "/tphfiles/images/btn_services_off.jpg";
	image6 = new Image();
	image6.src = "/tphfiles/images/btn_services_on.jpg";

}