sfHover = function() {
	var browser = navigator.userAgent;
	 
	if( (browser.search(/Opera/) == -1 && browser.search(/MSIE/) != -1) ){
		
		var sfULs = document.getElementById('mainNav').getElementsByTagName('ul');
		//alert(111);
		/** IE script to change class on mouseover **/
		  var sfLIs = document.getElementById('mainNav').getElementsByTagName('li');

		  for (var i=0; i<sfLIs.length; i++) if (sfLIs[i]) {
			sfLIs[i].onmouseover=function() {this.className+=" sfhover";}
			

			sfLIs[i].onmouseout=function() {this.className=this.className.replace(' sfhover', '');}
		  }
	  }else{
		var sfEls = document.getElementById("mainNav").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);