function switchMe(id) {
	//document.getElementById('menulink').className='active';
	if(id=="lims") {
		hide("modules");
		hide("pages");
		show("lims","block");
		
		document.getElementById('lims_link').className='menu_item right grey sel';
		document.getElementById('modules_link').className='menu_item middle grey';
		document.getElementById('pages_link').className='menu_item left grey';
	
	}
	if(id=="modules") {
		hide("lims");
		hide("pages");
		show("modules","block");
		
		document.getElementById('lims_link').className='menu_item right grey';
		document.getElementById('modules_link').className='menu_item middle grey sel';
		document.getElementById('pages_link').className='menu_item left grey';
	
	}
	if(id=="pages") {
		hide("lims");
		hide("modules");
		show("pages","block");
		
		document.getElementById('lims_link').className='menu_item right grey';
		document.getElementById('modules_link').className='menu_item middle grey';
		document.getElementById('pages_link').className='menu_item left grey sel';
	
	}
}

function getSel(){
    
    var sel_col = readCookie('selected_column');
    switchMe(sel_col);
}

function show(id, how){
    
    var sel_col = readCookie('selected_column');
    
    if(!sel_col)    createCookie('selected_column', id);
    if(sel_col != id){
        eraseCookie('selected_column');
        createCookie('selected_column', id);
        sel_col = readCookie('selected_column');
    }
    
	if (navigator.appName == 'Microsoft Internet Explorer') {
		element=document.getElementById(id).style;
		element.display = 'block';
	}
	else {
		element=document.getElementById(id).style;
		element.display = how;
	}
}
// ......................................................................
function hide(id){
	element=document.getElementById(id).style;
	element.display = 'none';
}

    
/**  KOLACKY :)  **/

function createCookie(name,value) {

    var date = new Date();
    date.setTime(date.getTime()+(15*60*1000));
    var expires = "; expires="+date.toGMTString();
    document.cookie = name+"="+value+expires+"; path=/";

}


function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');

    for(var i=0;i < ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }
    return null;
}

function eraseCookie(name) {
    createCookie(name,"",-1);
}