watermark=function(element,cssStyle,initialText){if(element==null||initialText==null||initialText.length==0)
return;this.el=element;this.waterText=initialText;if(cssStyle!=null&&cssStyle.length>0)
this.waterCssStyle=cssStyle;this.initialise();}
watermark.prototype={el:null,initialise:function()
{var events=YAHOO.util.Event;var css=this.waterCssStyle;var el=this.el;events.addListener(el,"focus",this.onFocus,this);events.addListener(el,"blur",this.onBlur,this);if(el.value.length==0)
{el.value=this.waterText;if(css.length>0)
YAHOO.util.Dom.addClass(el,css);}else if(el.value=="dd/mm/yyyy"){el.value="";}},onFocus:function(ev,obj)
{var css=obj.waterCssStyle;var el=obj.el;if(css.length>0)
YAHOO.util.Dom.removeClass(el,css);if(el.value==obj.waterText)
el.value="";},onBlur:function(ev,obj)
{var el=obj.el;var css=obj.waterCssStyle;var waterText=obj.waterText;if(el.value==waterText||el.value.length==0)
{el.value=waterText;if(css.length>0)
YAHOO.util.Dom.addClass(el,css);}},waterText:"",waterCssStyle:""}