// Dependencies: 
//
// FILE: rs-dotnet-helper.js
//


/*
 * Get the name prefix added by .net for form elements.
 * Assumes there is an <asp:Literal /> called ctrlPrefix on the page.
 * This is where the name prefix that .net adds is stored, e.g. "ctl00_pContent_"
 * The literal's value is set up in the Page_Init(). See also Helper.SetFormPrefixValue
*/
function getIdCtrlPrefix() {
       var prefix;             
       var    objCrtlPrefix = document.getElementById("ctrlIdPrefix");
             
       if (objCrtlPrefix)
          prefix = objCrtlPrefix.value;                 

       return prefix;
}

function getNameCtrlPrefix() {
       var prefix;             
       var    objCrtlPrefix = document.getElementById("ctrlNamePrefix");
             
       if (objCrtlPrefix)
          prefix = objCrtlPrefix.value;                 

       return prefix;
}

/*
 * Get a control on a page.
*/
function getCtrlFullId(ctrlId) {
    
    var prefix = getIdCtrlPrefix();
    //alert (prefix + ctrlId);
    return prefix + ctrlId;
}

/*
 * Get a control on a page.
*/
function getCtrl(ctrlId) {
    var objCrtl = document.getElementById(getCtrlFullId(ctrlId));
    return objCrtl;
}


// set the radio button with the given value as being checked
// do nothing if there are no radio buttons
// if the given value does not exist, all the radio buttons
// are reset to unchecked
function setCheckedValue(radioObj, newValue) {
	if(!radioObj)
		return;
	var radioLength = radioObj.length;
	if(radioLength == undefined) {
		radioObj.checked = (radioObj.value == newValue.toString());
		return;
	}
	for(var i = 0; i < radioLength; i++) {
		radioObj[i].checked = false;
		if(radioObj[i].value == newValue.toString()) {
			radioObj[i].checked = true;
		}
	}
}