<input type="text" placeholder="Я обхожусь без скриптов!"/>

function activatePlaceholders() {
var detect = navigator.userAgent.toLowerCase();  
if (detect.indexOf(”safari”) > 0) return false;
var inputs = document.getElementsByTagName(”input”);
for (var i=0;i<inputs.length;i++) {
   if (inputs[i].getAttribute(”type”) == “text”) {
    if (inputs[i].getAttribute(”placeholder”) && inputs[i].getAttribute(”placeholder”).length > 0) {
     inputs[i].value = inputs[i].getAttribute(”placeholder”);
     inputs[i].onclick = function() {
      if (this.value == this.getAttribute(”placeholder”)) {
       this.value = “”;
      }
      return false;
     }
     inputs[i].onblur = function() {
      if (this.value.length < 1) {
       this.value = this.getAttribute(”placeholder”);
      }
     }
    }
   }
}
}
window.onload=function() {
activatePlaceholders();
}