function trim(str) { return str.replace(/^\s*|\s*$/g,""); }
function isAlphaNumeric(inputChar) { return (/[0-9A-Za-z]/.test(inputChar)); }
function stripHTMLTag(str) { return str.replace(/<\/?[^>]+>/gi, ""); }
function htmlentities(str) {
	str = str.replace(/&/gi, "&amp;");
	str = str.replace(/</gi, "&lt;");
	str = str.replace(/>/gi, "&gt;");
	return str;
}
function htmlentitiesregex(str) {
	str = str.replace(/&/gi, "(&amp;)");
	str = str.replace(/</gi, "(&lt;)");
	str = str.replace(/>/gi, "(&gt;)");
	str = str.replace(/\//gi, "\\/");
	return str;
}
function clearTextBox(obj) { 
	if(obj.clicked==null) { obj.value=''; obj.clicked=true; } 
}