//get querystring variable value
function getQueryVariable(variable) 
{
    var queryString = window.location.search.substring(1);            
    var attributes = queryString.split("&");
    var retValue = ''
    for (var i=0;i<attributes.length;i++) 
    {
        var pair = attributes[i].split("=");
        if (pair[0] == variable) 
        {
            retValue = pair[1];
            break;
        }
    }            
    return retValue;
} 

//handle error
function handleError() 
{        
	    return true;
}