<!--
		var imgArray   = new Array ("about_us", "snoring", "children", "surgical", "radio", "research", "sleep", "overview", "resources", "researchpap", "tongue", "palate", "turbinate", "osa", "contactus", "faq", "history");   
        var imgtype    = ".gif";
		var imgDir     = "images/";        
		var preload    = true;               


  if (document.images) {
    for (i = 0; i < imgArray.length; i++) {
      tempObj1 = new Image();
      tempObj2 = new Image();                 
      tempObj1.src = imgDir + imgArray[i] + "1" + imgtype;
      tempObj2.src = imgDir + imgArray[i] + "2" + imgtype;
    }
  }


function highlight(imgName) {
 if (document.images) {
   document.images[imgName].src = imgDir + imgName + "2" + imgtype;
 } 
}

function dim(imgName) {
 if (document.images) {
   document.images[imgName].src = imgDir + imgName + "1" + imgtype;
 } 
}

//-->