function initInputs(){
	var _inputs = document.getElementsByTagName('input');
	var _val = [];
	for(i=0;i<_inputs.length;i++) {
		if (_inputs[i].className.indexOf('field')!=-1) {
			_val[i] = _inputs[i].value;
			_inputs[i].index = i;
			_inputs[i].onfocus = function(){
				if(_val[this.index] == this.value) this.value = '';
			}
			_inputs[i].onblur = function(){
				if(_val[this.index] == this.value || this.value == '') this.value = _val[this.index];
			}
		}
	}
}

if (window.addEventListener) window.addEventListener("load", initInputs, false);
else if (window.attachEvent) window.attachEvent("onload", initInputs);