function get_url_param( name )
{
	name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");

	var regexS = "[\\?&]"+name+"=([^&#]*)";
	var regex = new RegExp( regexS );
	var results = regex.exec( window.location.href );

	if ( results == null )
		return "";
	else
		return results[1];
}

function validateEmail(elementValue){
   var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
   return emailPattern.test(elementValue);
 }