query_vars = new Object();
readQuery();

function readQuery(){

	// get the URLs query string
	var query_string = document.location.search.toString().substring(1);

	// if no query string
	if(query_string.length == 0){
		query_vars = null;
		return;
	}

	// if no '=', then just the one variable
	if( query_string.indexOf('=',0) == -1 ){
		query_vars = query_string;
		return;
	}
	
	// split the query string into 'name=value' pairs
	var var_list = query_string.split('&');

	// loop through the list of values
	for(i=0; i<var_list.length; i++){

		// split them into separate names / values
		var_list[i] = var_list[i].split('=');

		// if no value set for the variable, set to null
		if( var_list[i][1] == '' ) var_list[i][1] = null;

		// create variable within the query vals object
		eval( "query_vars." + var_list[i][0] + "='" + var_list[i][1] + "'" );

	}
	
}