function imgConstructor(name, off, on ){
	
	this.identifier = name;
	
	this.active = new Image( );
	this.active.src = on ;
	this.inactive = new Image( );
	this.inactive.src = off;

	this.state = false;	
	this.mouseover = imgMutator;
	
	
	}

	function imgMutator(){
		if(!this.state){
			document.images[this.identifier].src = this.active.src;
			this.state = true;
		}
		else{
			 document.images[this.identifier].src = this.inactive.src;
			 this.state = false;
		}
	}

	
	var img1 = new imgConstructor('b2', 'images/i/viewcart.gif', 'images/i/viewcart_on.gif');
	var img2 = new imgConstructor('b1', 'images/i/find.gif', 'images/i/find_on.gif');

	var header = new Array(8);
	for(q=1;q<header.length;q++){
		header[q] = new imgConstructor('n'+q , 'images/i/topnav'+q+'.gif', 'images/i/topnav'+q+'_on.gif');
	}