function addLoadEvent(func){
var oldonload=window.onload;
if(typeof window.onload!='function'){
window.onload=func;
}else{
window.onload=function(){
oldonload();
func();
}
}
}
function prepareInputsForHints(){
var inputs=document.getElementsByTagName("input");
for(var i=0;i<inputs.length;i++){
inputs[i].onfocus=function(){
this.parentNode.getElementsByTagName("span")[0].style.display="inline";
}
inputs[i].onblur=function(){
this.parentNode.getElementsByTagName("span")[0].style.display="none";
}
}
var selects=document.getElementsByTagName("select");
for(var k=0;k<selects.length;k++){
selects[k].onfocus=function(){
this.parentNode.getElementsByTagName("span")[0].style.display="inline";
}
selects[k].onblur=function(){
this.parentNode.getElementsByTagName("span")[0].style.display="none";
}
}
var textareas=document.getElementsByTagName("textarea");
for(var m=0;m<textareas.length;m++){
textareas[m].onfocus=function(){
this.parentNode.getElementsByTagName("span")[0].style.display="inline";
}
textareas[m].onblur=function(){
this.parentNode.getElementsByTagName("span")[0].style.display="none";
}
}
}
addLoadEvent(prepareInputsForHints);