var defImg;
		function ImgChange(target, img){
		  if(document.getElementById){
			defImg = document.getElementById(target).getAttribute("src");
			document.getElementById(target).setAttribute("src", img);
		  }
		}
		function ImgBack(target){
		  if(document.getElementById){
			document.getElementById(target).setAttribute("src",defImg);
		  }
		}    

function MM_openBrWindow(theURL,winName,features) {
window.open(theURL,winName,features);
}
function preloader() 
{
     // counter     
	 var i = 0;
     // create object    
	 imageObj = new Image();
     // set image list    
	 images = new Array();    
	 images[0]="images/1.jpg"   
	 images[1]="images/2.jpg"     
	 images[2]="images/3.jpg"    
	 images[3]="images/about.jpg"
 	 images[4]="images/contact.jpg"
 // start preloading    
	 for(i=0; i<=4; i++) 
	 {          
	  imageObj.src=images[i];    
	 }

} 


window.document.onload=preloader();