var ie = false;
var ie5 = false;
if (navigator.appVersion.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1){
	ie = true;
}
var usertab = null;
function showTab(tab) {
	usertab = tab;
	t1 = document.getElementById('pr_genel');
	t2 = document.getElementById('pr_fayda');
	t3 = document.getElementById('pr_uygulama');

	navbar = document.getElementById('tabbar');
	test = navbar.getElementsByTagName('DIV');
	
	for (i=0; i < test.length; i++) {
		if (test[i].id == 'tab_' + tab) {
			test[i].className = 'uruntab_on';
		} else {
			test[i].className = 'uruntab';
		}
	}
	
    if (t1) {
	    if (t1.id == 'pr_'+tab) {
		    t1.className = 'pr_show';
	    } else {
		    t1.className = 'pr_hide';
	    }
	}
	
	if (t2) {
	    if (t2.id == 'pr_'+tab) {
		    t2.className = 'pr_show';
	    } else {
		    t2.className = 'pr_hide';
	    }
	}
	
	if (t3) {
	    if (t3.id == 'pr_'+tab) {
		    t3.className = 'pr_show';
	    } else {
		    t3.className = 'pr_hide';
	    }
	}

}