IS_DOM = (document.getElementById) ? true : false;

// image-swapping functions
function imgOn(imgName) {
  if (document.getElementById) {
    document.getElementById(imgName).src = eval(imgName + "on.src");
  }
}
 
function imgOff(imgName) {
  if (document.getElementById) {
    document.getElementById(imgName).src = eval(imgName + "off.src");
  }
}

function popIt(url, windowName, width, height) {
window.open(url,windowName,"top=100,left=100,scrollbars=yes,width=" + width + ",height=" + height + ",resizable=yes")
}

// preload constant
var aConstants = new Array();
aConstants = ["","home","sitemap"];
for (i = 1; i < aConstants.length; i++) { 
	eval("cnst"+i+"on = new Image();"); eval("cnst"+i+"off = new Image();");
	eval("cnst"+(i)+"on.src = \"" + sFolderLevel + "img/navigation/cnst-"+aConstants[i]+"-r.gif\";");
	eval("cnst"+(i)+"off.src = \"" + sFolderLevel + "img/navigation/cnst-"+aConstants[i]+"-0.gif\";");
}

// preload level1 menu buttons
var aLevel1 = new Array();
aLevel1 = ["","about","products","solutions","contact"];
for (i = 1; i < aLevel1.length; i++) { 
	eval("l1nav"+i+"on = new Image();"); eval("l1nav"+i+"off = new Image();");
	eval("l1nav"+(i)+"on.src = \"" + sFolderLevel + "img/navigation/l1nav-"+aLevel1[i]+"-r.gif\";");
	eval("l1nav"+(i)+"off.src = \"" + sFolderLevel + "img/navigation/l1nav-"+aLevel1[i]+"-0.gif\";");
}