// Array Get-Parameter
HTTP_GET_VARS = new Array();
str_GET = document.location.search.substr(1, document.location.search.length);
if(str_GET != ''){
    arr_Get = str_GET.split('&');
    for(i = 0; i < arr_Get.length; ++i) {
        str_Value='';
		arr_Value = arr_Get[i].split('=');
        if(arr_Value.length > 1) {
			str_Value = arr_Value[1];
		}
        HTTP_GET_VARS[unescape(arr_Value[0])] = unescape(str_Value);
        }
 }
// Function to read Get parameter
function GET(str_Name) {
	if(!HTTP_GET_VARS[str_Name]){
		return 'undefined';
	}
	return HTTP_GET_VARS[str_Name];
}