// This function is useful to get parameters

function getParameterByName(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 decodeURIComponent(results[1].replace(/\+/g, " "));

}


//Function to remove a specific element from an array
function remove_selection(arr, obj) {
  					for(var i=0; i<arr.length; i++) {
    					if (arr[i] == obj) {
							arr.splice(i,1);
							}
 					 }
					 return arr;
					 
				}