// <!--


		if(typeof(siteRoot)=="undefined") {
			siteRoot="";
		}

        var rollover_OK = "no";

        function readyToGo() {

                rollover_OK = "yes";

                }

        if (document.images) {

           var button1_OFF = new Image();
           var button1_ON  = new Image();
           
           var button2_OFF = new Image();
           var button2_ON  = new Image();
           
           var button3_OFF = new Image();
           var button3_ON  = new Image();

           var button4_OFF = new Image();
           var button4_ON  = new Image();
                      
           var button5_OFF = new Image();
           var button5_ON  = new Image();
           
           var button6_OFF = new Image();
           var button6_ON  = new Image();
           
           var button7_OFF = new Image();
           var button7_ON  = new Image();
           
           var button1908_OFF = new Image();
           var button1908_ON  = new Image();
           
           var button1952_OFF = new Image();
           var button1952_ON  = new Image();
           
           var button1976_OFF = new Image();
           var button1976_ON  = new Image();
           
           var button1986_OFF = new Image();
           var button1986_ON  = new Image();
           
           var button1971_OFF = new Image();
           var button1971_ON  = new Image();
           
           var button1986_3_OFF = new Image();
           var button1986_3_ON  = new Image();
           
           var button1987_OFF = new Image();
           var button1987_ON  = new Image();
           
           var button1988_OFF = new Image();
           var button1988_ON  = new Image();
           
           var button1989_OFF = new Image();
           var button1989_ON  = new Image();
           
           var button1990_OFF = new Image();
           var button1990_ON  = new Image();
           
           var button1991_OFF = new Image();
           var button1991_ON  = new Image();
                      
           var button1993_OFF = new Image();
           var button1993_ON  = new Image();
                      
           var button1997_OFF = new Image();
           var button1997_ON  = new Image();
           
           var button2004_OFF = new Image();
           var button2004_ON  = new Image();
                      
           var button2005_OFF = new Image();
           var button2005_ON  = new Image();
                      
                      
   		   button1_OFF.src = siteRoot+"images/nav/but_about.gif";
           button1_ON.src  = siteRoot+"images/nav/but_about_hi.gif";
           
           button2_OFF.src = siteRoot+"images/nav/but_products.gif";
           button2_ON.src  = siteRoot+"images/nav/but_products_hi.gif";

           button3_OFF.src = siteRoot+"images/nav/but_features.gif";
           button3_ON.src  = siteRoot+"images/nav/but_features_hi.gif";

           button4_OFF.src = siteRoot+"images/nav/but_knowledge.gif";
           button4_ON.src  = siteRoot+"images/nav/but_knowledge_hi.gif";
           
           button5_OFF.src = siteRoot+"images/nav/but_reimbursement.gif";
           button5_ON.src  = siteRoot+"images/nav/but_reimbursement_hi.gif";
           
           button6_OFF.src = siteRoot+"images/nav/but_clinical.gif";
           button6_ON.src  = siteRoot+"images/nav/but_clinical_hi.gif";
           
           button7_OFF.src = siteRoot+"images/nav/but_faqs.gif";
           button7_ON.src  = siteRoot+"images/nav/but_faqs_hi.gif";
           
           
           button1908_OFF.src = siteRoot+"images/nav/but_1908.gif";
           button1908_ON.src  = siteRoot+"images/nav/but_1908_hi.gif";
           
           button1952_OFF.src = siteRoot+"images/nav/but_1952.gif";
           button1952_ON.src  = siteRoot+"images/nav/but_1952_hi.gif";
           
           button1976_OFF.src = siteRoot+"images/nav/but_1976.gif";
           button1976_ON.src  = siteRoot+"images/nav/but_1976_hi.gif";
           
           button1986_OFF.src = siteRoot+"images/nav/but_1986.gif";
           button1986_ON.src  = siteRoot+"images/nav/but_1986_hi.gif";
           
           button1971_OFF.src = siteRoot+"images/nav/but_1971.gif";
           button1971_ON.src  = siteRoot+"images/nav/but_1971_hi.gif";
           
           button1986_3_OFF.src = siteRoot+"images/nav/but_1986_3.gif";
           button1986_3_ON.src  = siteRoot+"images/nav/but_1986_3_hi.gif";
           
           button1987_OFF.src = siteRoot+"images/nav/but_1987.gif";
           button1987_ON.src  = siteRoot+"images/nav/but_1987_hi.gif";
           
           button1988_OFF.src = siteRoot+"images/nav/but_1988.gif";
           button1988_ON.src  = siteRoot+"images/nav/but_1988_hi.gif";
           
           button1989_OFF.src = siteRoot+"images/nav/but_1989.gif";
           button1989_ON.src  = siteRoot+"images/nav/but_1989_hi.gif";
           
           button1990_OFF.src = siteRoot+"images/nav/but_1990.gif";
           button1990_ON.src  = siteRoot+"images/nav/but_1990_hi.gif";
           
           button1991_OFF.src = siteRoot+"images/nav/but_1991.gif";
           button1991_ON.src  = siteRoot+"images/nav/but_1991_hi.gif";
           
           button1993_OFF.src = siteRoot+"images/nav/but_1993.gif";
           button1993_ON.src  = siteRoot+"images/nav/but_1993_hi.gif";
           
           button1997_OFF.src = siteRoot+"images/nav/but_1997.gif";
           button1997_ON.src  = siteRoot+"images/nav/but_1997_hi.gif";
           
           button2004_OFF.src = siteRoot+"images/nav/but_2004.gif";
           button2004_ON.src  = siteRoot+"images/nav/but_2004_hi.gif";
           
           button2005_OFF.src = siteRoot+"images/nav/but_2005.gif";
           button2005_ON.src  = siteRoot+"images/nav/but_2005_hi.gif";
 
                      
  }



  function showButton(num,state) {

    if ((document.images) && (rollover_OK == "yes")) {

        document.images["button" + num].src = eval("button" + num + 
"_" + state + ".src");

    }

  }

// -->