// JavaScript Document
var defaultsCleared=new Array();
function clearDefault(id){
	var found = false;
	for (i=0;i<defaultsCleared;i++) {
		if (defaultsCleared[i]==id) {
			found = true;
		}
	}
	if (found==false) {
		document.getElementById(id).value="";
		defaultsCleared.push(id);
	}						
}