Register Client Script

Please anyone could tell me how to register the follow script in server side and which is created in User Control.
I have 2 GridViews ( GV1 and GV2) which of each has Check All header checkbox. When click on CheckBox header on each GridView, all records in each GridView suppose to be checked.

function HeaderClick(CheckBox, GVName) {

       //Get target base & child control.
       var TargetBaseControl;
       if (GVName == "GV1")
           TargetBaseControl = document.getElementById('<%= this.GV1.ClientID %>');
       else if (GVName == "gv2")
           var TargetBaseControl = document.getElementById('<%= this.gv1.ClientID %>');

       var TargetChildControl = "chk";
       //Get all the control of the type INPUT in the base control.
       var Inputs = TargetBaseControl.getElementsByTagName("input");
       alert(Inputs);
       //Checked/Unchecked all the checkBoxes in side the GridView.
       for (var n = 0; n < Inputs.length; ++n) {
           if (Inputs[n].type == 'checkbox' && Inputs[n].id.indexOf(TargetChildControl, 0) >= 0) {
               Inputs[n].checked = CheckBox.checked;
           }
       }

   }

Tags: C#