function Winaonchange(){

  urlarray = new Array();

  urlarray[0] = "products.html";

  urlarray[1] = "fertility.html";

  urlarray[2] = "infect.html";

  urlarray[3] = "doa.html";

  urlarray[4] = "tm.html";

  urlarray[5] = "cm.html";

  urlarray[6] = "glucose.html";
  
  urlarray[7] = "urinalysis.html";
  
   urlarray[8] = "immunoassay.html";
   urlarray[9] = "home-chemistry-tests.html";

 //  alert("from here...");

	myproducttype = document.getElementById("ProductType");

//	alert("gavin test");

	//alert(myproducttype.options[myproducttype.selectedIndex].value);

    myproducttype = myproducttype.options[myproducttype.selectedIndex].value;

//	alert("producttype value:" + myproducttype);

	i = parseInt(myproducttype);

//	alert("url value:" + urlarray[i]);

	location.href = urlarray[i];

}