function searchpage2(){
var one = document.detailsearch.latime.value
var three = document.detailsearch.inaltime.value
var four = document.detailsearch.diametru.value
var five = document.detailsearch.anotimp.value
var two = "http://www.anvelopenoi.ro/index.php?route=product/search&keyword="+one+three+four+" "+five
//alert (two)

   if(one != "") {// if field is not empty
   //alert("dim " + one) // concatenate text field value with this string
   location.href=two
   }
   else{
   alert("Introduceti dimensiunea")
   }

}