function del()
{
 	 var form = document.forms;
    for(var i = 0; i < form.length;i++)
    {
         var aktForm = form[i];
         for(var j = 0; j < aktForm.elements.length; ++j)
         {
              //if(aktForm.elements[j].type != 'text') continue;
			  switch (aktForm.elements[j].type) {
				  case 'text':
				  case 'password':	  

					  aktForm.elements[j].onfocus = function()
					  {
							if(this.value == this.defaultValue) this.value = "";
					  };
					  					  
					  aktForm.elements[j].onblur = function()
					  {
							if(!this.value) this.value = this.defaultValue;
					  };
					  
					break;
					default:continue;
			  }
         }
    }
}
window.onload = del;