var checked_properties;
function checkbox_click(){
	$("#main-checkbox").attr("checked",false);
	get_checked();
}

function check_all_none(){
    //alert("ghjghj");c@b
    //return;
	if($("#main-checkbox").attr('checked')){
	    //alert("jghjgh");
	    
		$("input[name='checkboxselector']").attr("checked",true);
		get_checked();
	}else{
	    
		$("input[name='checkboxselector']").attr("checked",false);
		checked_properties='';
	}
}

function get_checked()  {
	
	checked_properties='';
	checkboxselectors=document.getElementsByName('checkboxselector');
	count=0;
	for(i=0;i<checkboxselectors.length;i++){
		if(count==0){
			if(checkboxselectors[i].checked){
				checked_properties=checkboxselectors[i].value;
				count++;
			}
		}else{
			if(checkboxselectors[i].checked){
				checked_properties=checked_properties+','+checkboxselectors[i].value;
			}
		}
	}

}