$(document).ready(function(){
$("#nome").focus(function(){
 var n1 = $(this).val();
 if(n1 == "BUSCAR UM PRODUTO")
  {
   $(this).val("");
  } else { }
}).blur(function(){
 var n1 = $(this).val();
  if(n1 == "")
   {
    $(this).val("BUSCAR UM PRODUTO");
   }
 });;
});

startList = function() {
if (document.all&&document.getElementById) {
navRoot = document.getElementById("nav");
for (i=0; i<navRoot.childNodes.length; i++) {
node = navRoot.childNodes[i];
if (node.nodeName=="LI") {
node.onmouseover=function() {
this.className+=" over";
  }
  node.onmouseout=function() {
  this.className=this.className.replace
	(" over", "");
   }
   }
  }
 }
}
window.onload=startList;