function grayscale(image, bPlaceImage){
		
		  var myCanvas=document.createElement("canvas");
		  var myCanvasContext=myCanvas.getContext("2d");
		
		  var imgWidth=image.width;
		  var imgHeight=image.height;
		  myCanvas.width= imgWidth;
		  myCanvas.height=imgHeight;
		 
		  myCanvasContext.drawImage(image,0,0);
		
		  var imageData=myCanvasContext.getImageData(0,0, imgWidth, imgHeight);
		
		  for (i=0; i<imageData.height; i++){
		    for (j=0; j<imageData.width; j++){
				  var index=(i*4)*imageData.width+(j*4);
				  var red=imageData.data[index];	  
				  var green=imageData.data[index+1];
				  var blue=imageData.data[index+2];	  
				  var alpha=imageData.data[index+3];	 
				  var average=(red+green+blue)*0.3333; 	  
		
					imageData.data[index]=average;
					imageData.data[index+1]=average;
					imageData.data[index+2]=average;
					imageData.data[index+3]=alpha;
				}
		  }
		
		  myCanvasContext.putImageData(imageData,0,0,0,0, 
		  	imageData.width, imageData.height);
		
		
		  if (bPlaceImage){  
			  var myDiv=document.createElement("div");  
			  myDiv.appendChild(myCanvas);
			  image.parentNode.appendChild(myCanvas);//, image);
		  }
		  return myCanvas.toDataURL();
		}
		
		
		function MakeGSImage(image_container){
		 	
			var image = document.getElementById(image_container.find('img').attr('id'))
			image_container = document.getElementById(image_container.attr('id'))
			if (typeof image.style.filter != "undefined") {
		
				image.style.zoom = 1;
		
				image.style.filter = 
					"progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);";
				image_container.onmouseover=function(){
					image.style.filter = 
						"progid:DXImageTransform.Microsoft.BasicImage(grayscale=0)";}
				image_container.onmouseout=function(){
					image.style.filter = 
						"progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)";}
			} else {
				image.mouseOverImage=image.src;
				image.onload=function(){return true;};
				image.normalImage=grayscale(image, false);
				image_container.onmouseover=function(){image.src=image.mouseOverImage;}
				image_container.onmouseout=function(){image.src=image.normalImage;}
				image.src=image.normalImage;	
			}
		}