function activateMessage( messageId, doubleClick )
{	
	//get the id of the element
	elementId = 'messageId_' + messageId + '';
	
	//set active element border
	//document.getElementById( elementId ).style.border = "1px solid #cccccc";
	document.getElementById( elementId ).style.background = "#00aeef";
	document.getElementById( elementId ).style.color = "white";
	
	//get old data
	oldSelectedMessageId = document.getElementById( 'selectedMessageIdId' ).value;	
	
	//get the id of the old element
	oldSelectedElementId = 'messageId_' + oldSelectedMessageId + '';
		
	//set new data
	document.getElementById( 'selectedMessageIdId' ).value = messageId;
	
	//reset inactive element border
	if( oldSelectedElementId != elementId )
	{
		//document.getElementById( oldSelectedElementId ).style.border = "1px solid #ffffff";
		document.getElementById( oldSelectedElementId ).style.background = "white";
		document.getElementById( oldSelectedElementId ).style.color = "#333333";
	}
	
	//view the double clicked message
	if( doubleClick == 1 )
	{
		//we have to simulate that the viewBtn is clicked
		document.getElementById( 'doubleClickViewBtn' ).name = "viewBtn";
		document.getElementById( 'messageSelectedFormId' ).submit();		
	}
}