function showCase(num)
 {
 	if(num==1)
	{
		document.getElementById('about1').className = 'sd01';
		document.getElementById('svr1').className = 'sd04';
		document.getElementById('hotnew1').className = 'sd04';
		document.getElementById('case1').className = 'sd04';
		document.getElementById('contact1').className = 'specil';
		
		document.getElementById('about').style.display = '';
		document.getElementById('svr').style.display = 'none';
		document.getElementById('hotnew').style.display = 'none';
		document.getElementById('case').style.display = 'none';
		document.getElementById('contact').style.display = 'none';
	}
	if(num==2)
	{
		document.getElementById('about1').className = 'speci2';
		document.getElementById('svr1').className = 'sd02';
		document.getElementById('hotnew1').className = 'sd04';
		document.getElementById('case1').className = 'sd04';
		document.getElementById('contact1').className = 'specil';
		
		document.getElementById('about').style.display = 'none';
		document.getElementById('svr').style.display = '';
		document.getElementById('hotnew').style.display = 'none';
		document.getElementById('case').style.display = 'none';
		document.getElementById('contact').style.display = 'none';
	}
	if(num==3)
	{
		document.getElementById('about1').className = 'speci2';
		document.getElementById('svr1').className = 'sd04';
		document.getElementById('hotnew1').className = 'sd02';
		document.getElementById('case1').className = 'sd04';
		document.getElementById('contact1').className = 'specil';
		
		document.getElementById('about').style.display = 'none';
		document.getElementById('svr').style.display = 'none';
		document.getElementById('hotnew').style.display = '';
		document.getElementById('case').style.display = 'none';
		document.getElementById('contact').style.display = 'none';
	}
	if(num==4)
	{
		document.getElementById('about1').className = 'speci2';
		document.getElementById('svr1').className = 'sd04';
		document.getElementById('hotnew1').className = 'sd04';
		document.getElementById('case1').className = 'sd02';
		document.getElementById('contact1').className = 'specil';
		
		document.getElementById('about').style.display = 'none';
		document.getElementById('svr').style.display = 'none';
		document.getElementById('hotnew').style.display = 'none';
		document.getElementById('case').style.display = '';
		document.getElementById('contact').style.display = 'none';
	}
	if(num==5)
	{
		document.getElementById('about1').className = 'speci2';
		document.getElementById('svr1').className = 'sd04';
		document.getElementById('hotnew1').className = 'sd04';
		document.getElementById('case1').className = 'sd04';
		document.getElementById('contact1').className = 'sd03';
		
		document.getElementById('about').style.display = 'none';
		document.getElementById('svr').style.display = 'none';
		document.getElementById('hotnew').style.display = 'none';
		document.getElementById('case').style.display = 'none';
		document.getElementById('contact').style.display = '';
	}
 }
 
 
sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp("sfhover\\b"),"");
		}
	}
}
//if (window.attachEvent) window.attachEvent("onload", sfHover);
window.onload = sfHover;