function formCheck() {
   Error = false;

		if ((document.Form1.chkbox_main_sub[0].checked == false) && (document.Form1.chkbox_main_sub[1].checked == false)) {
     			alert("Please select your choice of subscription.");
                	document.Form1.chkbox_main_sub[0].focus();
			Error = true;
   		}
		
		else if ((document.Form1.chkbox_main_sub[0].checked == true) && (document.Form1.chkbox_main_sub[1].checked == true)) {
     			alert("Please select your choice of subscription.");
			document.Form1.chkbox_main_sub[0].checked = false;
			document.Form1.chkbox_main_sub[1].checked = false;		
	                document.Form1.chkbox_main_sub[0].focus();
      			Error = true;
   		}   		
   		
		else if ((document.Form1.chkbox_main_sub[1].checked == true) && (document.Form1.radio_semester[0].checked == false) && (document.Form1.radio_semester[1].checked == false)) {
   			alert("Please select your choice of term.");
        		document.Form1.radio_semester[0].focus();
      			Error = true;
   		}   		
   		
   		//else if (((document.Form1.chkbox_main_sub[0].checked == true)) && (document.Form1.chkbox_semester_upgrade.checked == true)) {
     			//alert("Upgrade Subscription is for Per Semester Subscription.");
				//document.Form1.chkbox_main_sub[0].checked = false;
				//document.Form1.chkbox_main_sub[1].checked = false;			
     			//document.Form1.chkbox_semester_upgrade.checked = false;
	            //document.Form1.chkbox_main_sub[0].focus();
      			//Error = true;
   		//}
   		
	 if (Error == true) 
	 {
	 return false;
     }
     else 
     {
	return true;
    }
}