function forms(id_name){
    var form = document.getElementById(id_name);
    var elems = form.elements;
//    console.log( form.onsubmit);
//    form.onsubmit = form.onsubmit;
    //alert(id_name);
    for (i=0; i < elems.length; i++){
       if (elems[i].type == 'text' || elems[i].type == 'textarea'){
           showElemTitle(elems[i]);
           //alert(elems[i]);
           elems[i].onblur = showTitle;
           elems[i].onfocus = clearTitle;
       }
       else if (elems[i].type == 'submit' || elems[i].type == 'image' ){
            elems[i].onmousedown = new Function("clearAllTitle('"+id_name+"');");
       }
    }
    
}

function showTitle(){
    if (this.value == '') this.value = this.title;
}
function showElemTitle(elem){
    if (elem.value == '') elem.value = elem.title;
}

function clearTitle(){
    if (this.value == this.title ) this.value = '';
}
function clearElemTitle(elem){
    if (elem.value == elem.title ) elem.value = '';
}

function clearAllTitle(id_name){
    var form = document.getElementById(id_name);
   
    var elems = form.elements;
    for (i=0; i<elems.length; i++){
       if (elems[i].type == 'text' || elems[i].type == 'textarea'){
           clearElemTitle(elems[i]);
       }
    }
}