function onblur() { 
	if (this.value == '') { 
		this.value = this.defaultValue; 
	}
}

function onfocus() {
	if(this.value == this.defaultValue) { 
		this.value = ''
	}
}

window.onload = function() {	
	var element = null;
	var list = ['gl-search']; 

	for(var i = 0; i < list.length; i++) { 
		var element = document.forms[0].elements[list[i]];
		element.onblur = onblur; element.onfocus = onfocus; }
}