if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){//test for MSIE x.x;  
		    	 var ieversion=new Number(RegExp.$1) // capture x.x portion and store as a number  
		    	if (ieversion==7)  { 
		    		var jobsearch = document.getElementById("jobsearch");
		    		jobsearch.style.zIndex = -1;
		        }		  
		    	  
		    }