function SwapImage(ImgName,winWidth,winHeight) {

document.getElementById("mainimage").src="images/upload/med_" + ImgName;

document.getElementById("mainimage").onclick = function() {
OpenImage(winWidth,winHeight);
}


}






//function SwapImage(ImgName,winWidth,winHeight) {
//document.getElementById("largeimg").innerHTML ='<img src=images/upload/med_' + ImgName +' alt="Click image to enlarge"  id="mainimage" onclick="javscript:OpenImage(\'' + winWidth + '\',\'' + winHeight+ '\');" align="left">';
//}


function OpenImage(winWidth,winHeight) {
	var imagewindow = '';
	var imagesrc = document.getElementById("mainimage").src;	
	
	var adbits = imagesrc.split("/");
	var ImageName;
	
	for(i=1;i<6;i++) {
	ImageName = adbits[i];
	}
	
	ImageName = ImageName.substring(4);		
	
	if (!imagewindow.closed && imagewindow.location) {
		imagewindow.close();		
	}	
	
	
	imagewindow=window.open('image.php?image=' + ImageName,'imagewindow','height=' + winHeight +',width=' + winWidth);
	if (!imagewindow.opener) imagewindow.opener = self;
	if (window.focus) {imagewindow.focus()}
	return false;
}