var nW,nH,oH,oW;

function zoomToggle(iWideSmall,iHighSmall,iWideLarge,iHighLarge,whichImage){

	oW=whichImage.style.width;oH=whichImage.style.height;

	if((oW==iWideLarge)||(oH==iHighLarge)){

		nW=iWideSmall;nH=iHighSmall;
	
	} else {
	
		nW=iWideLarge;nH=iHighLarge;
		
	}
	
	whichImage.style.width=nW;whichImage.style.height=nH;

}