function select_deselectAll (chkVal) 
{ 
    var frm = document.forms[0];
    // Loop through all elements
    for (i=0; i<frm.length; i++) 
    {
		try{
			if (frm.elements[i].id.substring(0,2)=="dg"){ //only change check boxes inside datagrids.
				frm.elements[i].checked = chkVal;
			}
       }catch(er){}
    }
}

//resizes the main content div of the logged in part of the web site so that it will render it's scroll bars when the browser is resized.
function resizeMainContent(){ 
//alert("resizeMainContent");
	var mainContent = document.getElementById("mainContent");
	if (mainContent==null) return;
	//var windowheight = window.innerHeight; //works only in firefox
	var currentOverallHeight = document.body.clientHeight; //works in both IE and firefox
	
//alert("currentOverallHeight="+currentOverallHeight);
//alert("mainContent.style.height="+mainContent.style.height);
	mainContent.style.height = (currentOverallHeight-180) + "px";
//alert("mainContent.style.height="+mainContent.style.height);
}