var glbRowNo = 1;
function callServer(action)  {
//alert(glbRowNo);
	var rowNo = 1;
	if (action == "pre") {
		rowNo = glbRowNo - 1;
		if(rowNo < 1) {
			//2007-11-01 modify by yuki
			//Update hot 20 products start
			//rowNo = 4;
			rowNo = 5;
			//Update hot 20 products end
		}
	}
	if (action == "next") {
		rowNo = glbRowNo + 1;
		//2007-11-01 modify by yuki
		//Update hot 20 products start
		//if(rowNo > 4)
		if(rowNo > 5) {
		//Update hot 20 products end
			rowNo = 1;
		}
	}
	document.getElementById("c4prods"+ glbRowNo).className = "disnone";
	document.getElementById("c4prods"+rowNo).className = "";	
	glbRowNo = rowNo;
}